Please no criticism
Long story short I can't stop thinking about one of my partners oldest friends I've been with my partner for 21yr and I do love him but we have been together since we were 15yr old we have 2 kids who are both grown up now but I really do believe if it wasn't for us having them we really wouldn't still be together anyway around 7 year ago I started getting feelings for a friend of his but pushed them aside anyway we moved house so not seeing him didn't stop them feeling's but did stop them becoming a problem until last year him and his friend reconnected then those feelings came flooding back then a few months ago me and his friend started chatting over messages at first the messages were just normal harmless chatting as he is also in a long-term relationship and they have young children but after a while the flirting started and i told him straight up that I had liked him since we first met 7yr ago and he didn't say anything like he felt the same or anything but we were talking about meeting up not to start a affair just to talk and try make sense of what was happening but before we had a chance to my partner found out about us messaging eachother he didn't find out everything just that we were chatting anyway the messaging stopped I can't stop thinking about him I'm not saying I've fell completely in love but I do have strong feelings for him and I miss talking to him anyway today I received a Facebook friend request from him and I stupidly accepted we started talking again but it isn't like before it more just general friend hi how are you chat but I don't understand why he would message me him knowing the way I feel I don't no what to do I don't want to bring everything up again but I don't understand why he has contacted me knowing the way I feel.
I need advice what to do I feel as if he is playing with my feelings now but truthfully I don't want to cut all ties with him because I'd rather have him as a friend then to not have him at all but is that making a bad situation worse I don't know what to do.