Bi, gay, or what?

So is there a term for someone who is both sexually and romantically attracted to men, but only attracted sexually to women. I am a 22 year old guy and have always been sexually turned on by men and can image myself being in a relationship with a man, marrying a man, loving a man, etc. But when it comes to women I have a physical attraction and thats it. I dont want to be romantic with a women, I dont see myself ever marrying or falling in love with a women. Usually I just tell people I'm gay to avoid confusion and explaining, or say I'm bi to girls. I've heard monoromantic bisexual but thats sounds like a mouth full is there a simpler term? Also how do I let a girl know without seeming like a jerk sometimes I feel like I'm leading them on or getting them interested only to say no to a relationship.