I agree you need to be ruthless. I don't reply to men I am not interested in. And this could be they are 15 years older, want children, don't have a photo or who I just don't fancy.
If the person chatting to me takes days to reply to messages, I put them in the no pile. Any time I have liked someone online, I want to encourage chat and a meet-up. If someone can't offer the same then they are clearly hedging their bets.
Re mental health, yes, it can be very disheartening, but this time around I took the approach that I only need to meet one incredible guy, not loads. And maybe that is going to take a bit of time.
The guy I am seeing on Thursday would not physically be my type. He's bald! But he is attractive, intelligent, attentive and makes me laugh. There was a definite spark on the first date from both sides. He said he'd call the following day as he was working in my area so we met again for coffee. No wondering, no BS.
Whatever happens with this guy or not, I've set my standard.
I do have to question people having multiple FBs. Of course each to their own, but can only imagine this would really knock my self esteem. If I have an itch, I can sort myself out without needing some guy that would then go off the radar till next time.
I understand the need to feel close to someone and wanting to be held blah blah, but when it is only on a causal basis, with someone who is possibly actively looking for a permanent partner, I know I'd feel used and it would really knock my self esteem.