Teasing Roommate Slut

So a few years back i had a friend named sanch, we fooled around a couple times nothing big. she was moving out on her own and needed a roommate and she asked me and to help her out i said sure. we were both single and knew what to expect from each other... so i thought. she had turned from the girl i knew kinda growing up into this slut teasing and was proud of it i guess? there were often times that she would rub me with her hands while im doing the dishes or she would rub her ass on my cock while going into the fridge to "get something" whatever the reason she always did it until i was i hard as a rock and would then walk away. The one night i was standing on a chair changing a light bulb in the bathroom when she came in and pulled my pants down then resting her face on my cock and yes i obviously got a boner, she rubbed her cheek along my dick and said 'nice cock" and went back into her room. I thought to my self enough is enough so after that every time she did something like that to tease me i jerked off and jizzed into her bottle of face cleanser. As you could imagine it happend often 3 times a week so from that you could imagine the amount of cum in that bottle. the last time this happened i was working out in the living doing chest press and she had the nerv to walk out in a thing and sit on my chest and i finally exploded saying to her"what the fuck is the issue here"? all this teasing all the time what do you want? she honestly said " the guys i date aren't like you" i replied "yeah so what what? you cant just do this to me and expect me to be ok with it. she said your right then do something about it and i said i have. ive been cumming in your face cleanser bottle every time you tease me, she says seriously? yeah you have been rubbing my cum on your face for weeks now and all she said was thats fucking hot. Im like what? she tells me she didnt know how to approach the situation that she really liked me and wanted to get nasty so i said just tell me and she did. while on the bench press she moved her thong aside and asked if i wanted to eat her pussy which i gladly did which then turned into eat her ass fucking her silly and yes finishing it off with her on her knees taking a big load of cum on her face. we have moved apart since then but every so often while in between relationships we get together and fuck like pros... its pretty great