I'm torn between 2 guys.
Most Helpful Guy
Some people expect monogamy from 'go' and others don't. If you don't know that ahead of time, you could end up hurting feelings. First date is the best time to have the talk, not the DTR talk, the IRYYRM talk. (I respect you, you respect me)
If you're seeing multiple people and one of them expects monogamy, but you're not down, then you're being selfish. You need to limit your dating pool to like-minded people.
I believe the first kiss should either end every other relationship or the one you're kissing. I don't want to find out my love interest is making out with multiple guys. I doubt that would make anyone very warm & fuzzy.
Most Helpful Girl
I don't think there's anything wrong with it as long as you're not sleeping with either of them. If they're both into you, you probably should choose quite soon thou