Sorry if this is short but I need to relief myself. Well first of all let's have some context here

I'm 15yo girl who is total shit

My mom a great woman 

my uncle, not blood related but it still and uncle

&amp;#x200B;

This story just happened today, I went to a house that my uncle rent. There was a pool and everything, we had barbacue etc but I really felt uncomfortable everytime my mom was near my uncle wrapping her arms around him and those things but when they would kiss everytime that's when I was fed up. They would even "hide" to I assume to make out but when they done that they always walked in front of me so I knew what going on.

She is not like my dad because he told me he has a girlfriend last year but he is giving me time because he know how I react to things like that however my mom is not doing this, she straight up took our sister and us to that house and even if I've seen my uncle multiple times I still can't he see him and my mom's boyfriend he's still an uncle for me. I also need to say when he told me about his girlfriend my grandparents (mom's parents) told me that he left us for her and inmediatly I was angry at him but later on he told me the truth.

I think that I'm the asshole for not accepting this situation fast enough and that I'm a little childish but I also think that I have some kind of problem or something 

&amp;#x200B;

idk help me