Am I in the wrong ?

A month ago, my boyfriends cousins husband messaged me on Instagram. They are married with 3 kids. He wished me Happy Birthday with a crazy 😜 EMOJI. I obviously said thank you and he asked how I was doing. Yea I gotta admit I shouldn’t have carried the conversation. But I went into details how I’m mentally exhausted because I can’t find a job that offers good pay. I should have just said “good thanks for asking”

Well he then said “im sure you’ll get a job somewhere you’re really hot “ I replied with “huh??” He then said “ I wanna fuck you badly tbh”

I removed him as a friend and told my bf. My bf was livid and also upset I carried the Convo. He confronted him and his cousin. Well his cousin and his sisters blocked me on social media. None of that family likes me or talks to me. I’ve been in situations where they just greet my bf and ignore me. My bf apologized to me and said it’s not my fault for carrying the convo.

They are making a. 4th of July party and they invited my bf. They obviously said I can’t go. My bf said he’ll go for a bit cause he feels bad so he can’t hang out with me. I’m kinda mad he’s doing this. Feels like he isn’t reasoning with me If that makes sense. He’s seen how badly they leave me out and I just feel like he isn’t choosing me over them. Gosh I feel horrible saying this but I’m just mad why can’t they be mad at the husband instead? I’ve heard he’s cheated before