I love you but i want to have with your friend (please read on)?

my boyfriend is a real gentleman, he loves me i know, he always tell me, he's just very very shy and does not know how to show his affection, whereas his friend who iv'e been flirting with a lot recently is a lot less frigid, he always touches me and makes me feel special and he always says really suggestive things and i keep getting an overpowering urge to cheat on my boyfriend what shall i do?