I need help I’m sorry for how complicated this is

So my boyfriend and I have been together since August. When we got together I expressed that I’m polysexual (polyamorous) at the beginning of February I had a miscarriage and after that I find myself having a hard time feeling sexual towards my boyfriend. I’ve been stuck in my apartment since the miscarriage and don’t get out much. I recently started reconnecting with an old family friend of mine and I find myself catching feelings for this person. I’m not sure how to even explain how I’m feeling because I’m confused myself honestly. Me and my boyfriend recently talked about the subject of my sexuality and how it’s effecting my sex drive. I’ve never experimented with polyamory but at the same time I don’t want my boyfriend to think he’s not enough.