Friendly teachers...?

so im in high school and my homeroom teacher is the girls soccer coach at my school and hes really hot , and ive heard from so many people that hes had flings with the juniors and seniors on the soccer team. and i noticed he kinda likes to flirt with me ha and i basically setting my self up for a bad situation? i mean i would never do anything with him. has anyone else had this exsperience with a very "friendly teacher"