One time there was a party at our home with my mom, dad, **** and a lot of guests.We drank a lot of alcohol then and there was my moms cousins with us.She was blonde,with a big tits,little bit of overweight.She was divorced and somehow she started telling me let's be a couple and we laughed.We danced that evening and it was around midnight so we all went to ****.There wasn,t a lot of beds so I found where to **** with other 2 people in bed.She was in that bed already sleeping so I lied right besides her.She was sleeping on her side.I slept right besides her looking at her back.I noticed she had a pretty big ass and I liked it so I got closer to her and started to rub my crotch right into her butt.We were wearing clothes and I rubbed trough them.Pretty fast I got hard in my pants and I felt she rubbing her butt to my cock as well.She had felt I have a hard on and kept rubbing her fat ass to my cock.Then I felt her hand sliding inside my pants and touching my erection.I started touching her butt as well and slided my hand inside her panties and her pussy was already wet.I said that I want her now and pulled down my pants and underwear so my cock was out.Then I pulled her panties down a little bit and started rub my cock trough her buttcheeks.She asked that she wants me too and I slided my hard cock in her warm wet pussy.She moaned silently and I slowly started fucking her pussy from behind.We were both lying on our side.
So I fucked her faster and harder with each thrust.I saw she loves it and started shaking and breath heavily.I wasn't using any condom and felt I will cum soon.Orgasm came so fast and I huged her and came deep in her pussy.After that we kissed and slept.In the morning she said she loved it and had to take a pill

I think you should try getting her to catch you masturbating.

It is a breach of trust, shows contempt for your mother and is inappropriate.

Pervert.

First see if your mom's friend wants a fuck. Second, make sure your mom doesn't mind. Third, take her to your room and fuck her.

You ask her if she's interested in getting laid. Most likely she'll say no, but you've eliminated the possibility this way.