I thought I was gay, am I turning bisexual?

I'm a 19 year old gay guy(I think) that is just so tired of being attracted to guys, generally speaking guys only use you for sex,they're selfish, they're colder,less caring it's disgusting.Guys been tearing apart my heart soooo many times.on the other hand girls are more caring, they listen more, they're more compassionate. Recently I've been noticing girls and have been crushing in them a lot..I feel like I could fall for a girl even though I'm still attracted to men...Im sooo confused...is this normal? Im starting to hold resentment to emu own gender. I had many girls hit on me in the past so now I think I could give it a try. Am I turning bisexual?