I'm assuming this argument refers to love interests, like loving two guys at the same time. I've never believed in the "one and only, you are my destiny" kind of love. I think it has a lot more to do with timing; like, are you both ready to commit . or not. Therefore, I think it's possible to love two at the same time, but it's not fair to either of them to hide that from them. At some point, you've got to make a tough decision and stick with it. No regrets, no wondering "what if I'd chosen the. other guy," b/c it will poison the relationship you did choose. .