My Strange Behavior (an Urge And It Gives Me A Rush)

I work with a man who sucks on my tit. He likes me to stand beside him when he is sitting in his office chair so he can rub his face around my tit. I open my blouse and release my tit and he latches onto my tit and sucks and tongues my nipple. Most of the time he also grabs my fanny cheek and squeezes it really hard. I've had light orgasms and very deep orgasms. If he gets excited he fucks me.

I've asked myself why I let him, I don't know. I happens but mostly it doesn't, we just work together.