Oh, screw what you told drummerboy. He told you he wouldn't leave right? Do what you want, don't break up with M-man because you made a promise under pressure...
I'm exactly like you, but a girl. I always thought guys had it much easier, none of the guys in my class have problems hitting on girls... (not me ofc.) Why don't you start slowly, like smile, say hi, accidently knock her books over