Boyfriend trouble

Okay so the last couple days for some odd reason. My boyfriend decided he wants to look at other girls boobs & find someone to have a threesome. I’m not really trying to do either one because it’s weird. Idk what has gotten into him but it’s been almost 8 months and I don’t get it. What should I do . He says he loves mine but he just wants to see other girls 😫😫😫