I'm just wondering is it possible to love two people at the same time?

Many people are in healthy polyamorous relationships! It may not be for some but for others it works just fine! Of course here it's different where the two guys don't like one another but they just like the same guy, but yes, it is possible.

I know quite a few people in happy poly relationships. While I am monogamous myself, I imagine it's like having 2 best friends at the same time.