"there's emotional feelings involved rightly or wrongly that's what makes it difficult. "
Duh. Yes. Whoever did you think otherwise.
Doesn't make his utterly despicable actions in any way acceptable. And learning to control your emotions is part of the journey to adulthood. One you perhaps need to work on as youbarevcurrently making very poor life choices.
"How and why I don't know because it certainly wasn't something I was looking for. Please note this has happened over time not weeks!!!"
It happened because you chose it and continue to choose it with every single converstation, call and text. Every single time you agree to any form of contact you are choosing him. Grooming - whichever way round or just mutual - does take weeks. And you have consented and chosen this all along.
Now, it makes not one whit of difference to anyone here whether this is the type of relationship you want. I think that settling for a FWB (for that is what you are, he's told you there's no future) would be dead wrong for me. But if it's your relationship dream, go for it.
But in doing so, keep your DC well clear of it.
I wonder if OP will be back? She was clearly lonely last night, and talking about him is keeping her bubble going.
I think it's a pity she doesn't use that as a spur to recognise how unhappy she is. Then again, perhaps she isn't and she just enjoys yakking about her (all too ordinary) sex life.