I've known this man a long time and we've finally started dating. He was with someone for around a year but broke it off, whether for me or not, I don't know. Anyway, he changes his SM profile pic from time to time, and has just changed it to a pic of him with his ex's dog, clearly taken on a day out they had together. AIBU to not like this? It gives me a pang of upset, and although I think I am being ridiculous, I can't help feeling a small amount of rage.