Pls help me.

Pls help. I’m 26 my bf is 30 , I just found a video on his phone of him on a Bachelor trip getting danced on my a girl when we were 3 months into dating. We have now been dating for ten months and I just found out that I’m pregnant a couple weeks ago. We decided to have the baby and get married. I really love this guy and I know he loves me but after seeing that I’m so fucking scared now. We were only dating for 3 months (that’s what I tell myself to make me feel better) the girl in the video also looked so ratchet and disgusting so maybe he was just doing it as a joke? The video was like her rubbing her ass on his d and he looks so drunk he doesn’t really even react to her. Shoukd I just forget about it and not bring it up? Or should I talk to him about it?? Fuck my life. I’m so sad right now. Please help.