But my question is….. if this is the case as many of you have said, then what is the point of having a relationship? If he were to cheat on me and we ended things, what would be the point in me starting a new relationship with someone else? If they are all going to do it, then what is the point??
I think it comes down to trust. I'm as certain as I can be that I wouldn't cheat. I've had opportunity to and never done it yet. But also, I met my DP later in life. I do think it's harder to remain faithful if you meet at 25 than if you meet at 45. You've got less life experience, there's more of a sense of the road not taken. Whereas past a certain point you can think 'nope, tried that, not doing that again'. And my partner is very similar to me in his moral compass. So I just think in the very unlikely event that he cheated and I found out, I'd deal with it then.
I think some posters on here have been very hurt by finding that someone they thought wouldn't cheat has done so, and it's badly affected their trust in people. And they're then spreading that misery outwards and saying it could happen to anyone.
And sure, 'not my Nigel' with his halitosis and his beer belly and his tendency to go on and on about fishing is going to have fewer opportunities than someone who is handsome and charismatic. But IMO I just don't think that necessarily makes the more attractive person more likely to cheat. He just needs a stronger ability to resist. But the idea that people are only faithful through lack of opportunity is ridiculous. Most people fall in between the two extremes of attractiveness and have some opportunity to cheat. And yet, one would hope, they mostly don't. And if they do, it's generally because of something else going on in their lives - often a source of stress.
So I'd say, tackle sources of stress as a couple. Keep building on your relationship. Maybe keep it at the back of your mind as a slight possibility, but don't assume it's inevitable. It really isn't.