so irritated😢

Hey everyone so I need advice, me and my SO had our baby shower on the 29th and it was beautiful it was invite only and was amazing no drama nothing Till towards the end.... So I'm walks this girl that was Clearly Not invited because she and her sister have a past with my SO (End of august me and my SO had a fight he called his stepbrother and his dad came to pick him up the whole car ride he called me and was like I love you I'm coming home I'm gonna go to my moms just clear my head.. well he ended up staying at his dads and called me the next day talking about he loves me he wants to come home blah blah then long behold I don't hear from him they end up having a party at his dads how's "coincidentally" and not one word from him... so I went to bed... I get woken up by a Big Knot in my stomach and am like no I'm trippin so I'm looking threw snap chat trying to fall asleep and bam on his cousins snap I see the lovely party but He is Not snapping it the Girl took his phone and started snapping and who do I see ohhhh my SO and he's drinking (he doesn't drink) and she asks who's Single here He raises his hand so quick and was like I'm Fuc**n single , then told her your sisters ass is fat, what would she do if I smacked it he was bumping and grinding on them and yeah , but I took him back ) so I was uncomfortable 😣 I bit my tongue because I didn't wanna seem rude and just ignored her and as we were packing to go I was walking by and his step brother cousin and her were talking they all shut up as soon as they saw me I had a weird feeling it was about me, then one of the guest came up to me and was like oh it's going down who we about to fight I'm ready I'm like what and she said they were talking shit and that she was going to go talk to my SO but we ended up leaving and I told my SO what had happened and he was just quiet... I got mad because I think that's disrespectful, he was texting his brother while we were talking like nothing, he kept saying how he understands and blah blah then I told him if you understand then why is it you can't defend me Nothing not a word next couple days didn't really talk about it I was so irritated then today his brother kept hitting him up and I just was quiet and ignored it then I was talking to my friend and she said I should tell him how I feel, so I did and he asked him if he was talking about me , he finally said yeah it doesn't matter that I was mugging every pretty girl at the party just anyone who talked to my SO (but in all the pix Everyone took I'm laughing smiling or playing games ) and that his mom threw a wonderful baby shower and that I'm ungrateful and didn't deserve it and that I'm his mistake and he has to deal with it , my SO didn't say anything so I was upset I told him I didn't want him to have to choose between me and his family and that we can be friends , he said no he wants our son and me  and that he will tell him and he doesn't care if they are in our lives so then he started texting his brother and put it on silent (he doesn't do that) then I was like well im going to bed because your brother obviously wants you to play games with him so then he said no I just told him I wanna see my son grow up happy with or without them and that's it so I look and No he said he had to handle some sh** with jackie(me) and then his brother asked if they were koo then he said I just wanna see my son grow up and then his brother said we'll play me in madden then he said I'm in bed and then put his phone on airplane mode!!!!! Is it So much to ask for that I want him to defend me?