Crossdressers first time with a guy

Hi, im new to this. this happened about 3 years ago now.

I had started off the night being at my ex gfs house looking at her sexy underwear thinking how it would feel etc. so, having just started a new job I felt it was time to relax a little while she was out working (from 10pm til 6am). from this simple thought I became massively aroused and started trying on her underwear, make up, and even a wig that was in the apartment. soon enough, I was looking like a slutty crossdresser.

I thought enough was enough and started making my way onto the street looking for - well I don't know what really. but I just walked until I saw a dark looking guy having a piss in a courtyard not far from where I was. I mad my way over to him shyly and was trying too look over his shoulder while he was relieving himself. he turned and saw me and I think his words were 'what the fuck are you looking at'. all I could say was 'do you want a hand with that?'. he stood still for a moment - I thought he would just turn and hit me being a pervy crossdresser in the street. but he turned after a pause and held his cock in his hand looking at me. I needed no further introduction and grabbed his cock with both hands. it felt great to feel a nice black cock in my hands. I grabbed his balls with my left hand and cock with my right. he sighed and I stroked back and forth slowly. I couldn't help it anymore, I needed it in my mouth so bad. I pointed to a quieter spot as we were still only 3 yards from the high street. he nodded and pulled his jeans up and moved to where I had pointed, his cock soon flopped out again. I slowly made my way to my knees for the first time. with this nice big black cock staring me in the face, I kneeled looking at it, taking it all in before putting all my mouth over it and trying to take it down my throat. I couldn't straight away but I kept sucking him back and forward, playing with his massive balls. he was loving it and kept saying 'good girl'. I knew my place and that getting this mans cum in my mouth was my goal.