Why Do I Do This?

I've been sucking cocks and getting fucked by men for 17 years. I kept it hid for many years, and have been coming out more and more the past few years. Why do I feel the necessity to tell people I'm a cock sucking anal slut cum dump faggot?
I will find myself telling people about sucking cocks, whether I know them or not. Some of the people I tell are close, long time friends. Most of them I don't really want to suck or get fucked by, but feel I should tell them anyway.
I approach strange men in bars, and ask them if I can suck them. Many say yes, others don't work out so well. I've even told my mom and sister I suck cocks.
Do I do this so others will out me? I have three men I suck and am fucked by weekly, so I really don't need more cock, but still I keep exposing myself.