Hi, sorry this is going to be a long one.
I've been with DP for 6 years now, he used to make music and was quite good at it, a few years ago, I was on the imac listening to some of the songs he made and sending new ones to my phone when I heard one that completely stumped me, it was a love song to a girl and I must admit it was really nice but was really specific talking about how he fell in love the first time she walked into his shop and took of her scarf. I questioned him about it and he said it was nothing and just a normal song, I did not believe him but decided not to make too much of a fuss.
Fast forward nearly a year and I once again stumble across an email with that song and a love song mix tape addressed to that girl, i put in her email into facebook and found that she lived near his work place at the time which was a pawnbroker type of store. I sent him a message with a screenshot of her profile to let him know I knew, we had a fight and it ended up with him telling me he should have slept with her and left me like she wanted. That killed me especially because before I ever foubd out about those songs, I literally begged him to make one for me which he did after so long and it was a half arsed effort, but for some reason I was not strong enough to break it off with him partly because he has been a father to my DD since she was 2 and they adore each other. He apologised saying he lied previously because he never wanted to hurt me because he loved me, I forgave him and we got past that.
Fast forward again 3 years and 2 kids later we have today, I was on instagram for the first time in a number of years and on my suggested friends list i see a number of people who are friends with xxxx, that did not bother me even though I didn't know who that xxxx was, I then see that girl in question and that got me wondering who xxxx was, I checked and it was DP, this brought back so many hurtful memories so I sent him a message telling him I know it's only instagram but I have a serious problem with it so fix it, he replied that he doesn't even talk to her but I'm uncomfortable with him looking at pictures she uploads so I begged him to fix it. He hasn't and I'm really hurt that after all this time he can't drop something that hurts me.
AIBU to be hurt by this and I should just take it as one of those things or am I justified in my feelings and put my foot down and make him remove her completely. Sorry once again that this is so long and thanks for bearing with me.