Polyamorous??

I’ve been with my boyfriend for a little while and though I love him to bits and he’s so fun to be around, I’m also still really in love with this guy I used to see and I know he really likes me too.

I’m stuck at what to do cause though I love my bf he just doesn’t make me feel the same way the other guy does but I don’t want to lose either of them.

I’ve had thoughts that I may be polyamorous for a few years now as it’s not the first time I’ve been stuck in a situation like this, but I have no idea how to explain my feelings to my bf without him being heartbroken.

Why complicates things even more is that me and my bf have just put a deposit down on a house for next year that neither of us can afford to pull out of.

So should I stay in a relationship that doesn’t make me truly happy just for the sake of keeping the peace or should I follow my heart and see where things go with the other guy?

Help!!!