I think he might be gay but I'm not sure

Either way he's for sure not into me. My boyfriend Avery and I are polyamorous, I'm also dating this girl Amy and he's dating this guy Alex.

Some people not on here have suggested that Avery might be gay and I'm a "beard" for him as he spends way more time with Alex than me. Even if it's not true, he definitely isn't into me.

He also said "IDK honestly" when I asked if we could hang out again like old times and have him spend equal time with us instead of him being on the phone with Alex and talking about him every time we talk. It's all he talks about when he's not leaving my messages on read but I know he'd think I was selfish if I told him to knock it off.