Playin Mind Games Or Wut do you think??? be honest?

had with both of my friends and me also forever ago but it was only once and we still see each other and ive had a boyfriend forever now and he is realizing that i aint a slut at all because the one time we did was a huge mistake and hes makin it so obvious that he really likes me and i dont know what it is about this guy i think its cuz of his ual experience and knowin if he had a good girl like me he wouldnt cheat make any sense and i gotta crush age difference does not matter and he gives crazy looks like he doesnt want me to know he like me!!! oh yea and he recently told my boyfriend to broaden his horizons maybe he is really likin me or what or im for a bunch of head games and hes so respectful with me and hes no where near like that with anybody else......so confused