Please could someone help me with this dream ASAP as it really upset me & has left me all out of sorts.

I dreamt that I was at my family home with my boyfriend & brother. My boyfriend asked me whether we should split up. The dream then jumped & Sav (my Boyf) was talking things through with my brother while I was hysterical. The next thing me & Sav where at a wedding & we were staying in the hotel. Things still werent sorted out between us & I was on edge. I was dressed & ready so went downstairs. I was in a room full of people I didnt know (mainly girls) & I was feeling a bit miserable. I went back upstairs to find out where Sav was. I heard the shower going so assumed he was in there. However, I looked into the room next door & there he was in bed with someone else. He was half dressed & she was fully clothed but there was clearly something going on. I confronted Sav outside the room & asked why he was doing this as I hadnt done anything wrong - he repiled with " Havent you?" & implied that I'd brought everything on myself!

I woke up feeling really miserable & sat & cried for about 1/2 hour. Please someone help me as Im still feeling a bit miserable about it!
Thanks
Kim xx