contacting women online? What am I up against?

[braceet]

For some time now my bf sometimes uses his phone when we are out if he has an internet connection, and he taps away at it, it has never bothered me - but recently I was looking in the mirror and had my back turned to him, I saw him switch to another screen on his pc and start typing, I could just make out a picture of a woman on the screen, he looked nervously at me over his shouder a few times - then when I turned around he quickly switched over to a weather map.
Once I started to notice - I realised he would often quickly check his pc every I went to the loo or whatever, and then when I came back he would either stop or switch over to another screen.
I dont live with him - we live in different cities and he would have every opportunity to cheat.
What really hurt, the other day was we were out and we were supposed to go to the cinema etc, he said he was tired and we turned back, as soon as we got back to his flat I went to the loo, and sure enough when I walked inot the room he was on his pc again and quickly switched over when I came back into the room.
Asking him is not an option and we had a row about it there and then, and he would ALWAYS deny anything. I never check his mobile or his pc, although he leaves both out for me to look at. I have never checked either. I have a feeling he would cover his tracks anyway.
I suppose my question is: what am I up against? What sort of women would he be contacting? Are they just women looking for sex? Does this type of thing always lead to sex with other women? Should I give up on him? To be honest it has upset me so much I cannot sleep.
Its the not knowing that is killing me.

Your questions are all wrong. It doesn't matter what the women are like. What you should be asking yourself is what kind of man is he? Can I trust him? Am I prepared to be in a relationship with someone like this?

You need to ask?

It's not a competition, especially when the "prize" is him.

Let some other lucky laydee put up with his shit.

Thanks for your replies ladies... sorry I did not mean what am I up against as regards 'competition' I was trying to think, is this sort of thing usually contacting women for sex, or flirting online? I mean what sort of women do this kind of thing? Contact strangers for sex or sex talk?
I should say really , I am not 100% sure he is doing what I think he is doing, as usual with things like this, you can never be 100% convinced he is - unless I can catch him red handed.

So what would you not mind - Flirty chat? Exchanging pictures? Exchanging revealing pictures? The fact that he's lying through his teeth and you know it? Where do you draw the line?

I think you need to find a bit of self-respect, braceet. I can't believe his cock is so golden that you would put up with this shite.

Maybe the question to ask is what sort of men do this kind of thing? The woman didn't promise you anything.

Check his history on his pc?
Stage going out of the room then catch him at it?
Whatever you find out - he is being deceitful and sneaky and you deserve better.

Let me tell you a bit about myself, I have had just 2 great loves of my life, the first one I finished due to his behaviour, but I spent the next 6 years regretting doing it. I am quite sensitive, jealous and quick to react, but having seen the man I dumped go on to marry and live happily with this other women made me realise some things about myself, I was too hard on myself and him, I realised that I acted too hastily and we could have got over our problems. For 6 years I was depressed and could not even contemplate going out with other men. All I did was eat sleep look after my children and work. Makes me sound like a miserable cow, but I?m not .
When I met my current man, the second great love of my love - I just fell for him, honestly he was worth waiting for, he is so kind, sweet, funny, we have such a great time together. This is why I?m reluctant to give him the boot, I know I need to think carefully about what I should do next. I need to work out the extent of the problem; I have been told that for some men this online stuff is addictive. If I dump him for this, I will spend the next several years in a deep depression.

Maybe you blamed yourself too much for the breakdown of the first relationship. You say you broke if off because of HIS behaviour which suggests he had a major hand in the problems.

Women often do this, they blame themselves for their partner's unreasonable behaviour.

What if you broke off the first relationship for all the right reasons? And your instincts were actually correct?

And what if his new woman is also unhappy but as a couple they put on a front to the world?

Don't let what happened before keep you trapped in an awful relationship now.

Have you actually had a discussion with this man about where you see the boundaries of 'fidelity' in your relationship? Because it is a matter for any couple to discuss between them and agree on the rules: some people are perfectly happy with open relationships and swinging, others are absolute monogamists who would be squealing for a divorce lawyer if their partner had a cup of coffee with someone else. Your boyfriend may consider that chatting and flirting online is not 'cheating' as it doesn't lead to any physical contact. He may be using a sexy-texting service and (as many such users are) be fully aware that it's a fantasy thing and 'Naughty Nina' isn't a real person as such, 'she' is a set of explicit photographs and any one of a pool of 'chat-ops' sat at home in their trackies eating crisps between texts.

But if this relationship is generally making you more miserable than happy, remember that you don't live with him, you don't have DC with him, just bin and move on.

The fact that he is sneaking about doing it behind her back leads me to think that he knows it is not something she would be happy about. If he thought it was. It cheating he would be more upfront about it?

It is cheating. You both have not been together for long and already he is already looking for sexual kicks elsewhere

If you stay with him, you are in for a life of being depressed

You can't get depressed because of a man- that's crazy talk.