I'm full figured myself but, I've not had that problem per se. You should get a book on tantra or Kama Sutra and try a cock ring. I do a lot of kegels to maintain muscle control and clamp on that man...lol....

Missionary with your leggs up on his shoulders or place a pillow under your butt to raise and tilt your hips. Doggie usually works best ? Try doing it at different levels. It could be that your parts and his parts are at the wrong angle so he slides out. Keep changeing the angle of insertion until you find something that works. Maybe even try doggie with you laying flat on your stomoch and legs out streight behind you.

Its all an angle thing and if he is average in size 5" to 7" then its got to be the way your pelvise tilts that making it difficult to stay in.

Best of luck.

.....thanks for this post, it's interesting to read. Honestly I never really thought about bigger people having problems with sexual positions before. You have enlightened me and although I don't have any tips to help you, I hope you find some way to fulfill your sex life. Much love to you.

Im sorry I didnt mean to say it was your fault it slides out. Its the position and angle of penitration that is causing it. I have been with bigger women and well I am not a small guy myself so I know what has worked for me and was just writing into that. I didnt mean to sound like i was placing blaim!.

The legs up on the shoulders usually works well and allows for the deepest penitration and satisfaction for both.
Best of luck

You said it's the first time you and he had sex together. It's not unusual being with a new partner for things to be awkward and not work out quite how you thought it would. Him losing his erection could be due to him being nervous and that's not uncommon.

Lost gave some good suggestions on positions, just keep trying and exploring different things to find what works for the both of you. Have fun with trying different positions, exploring each other to find out what works, what doesn't work but don't get all stressed out over it.

Yes, being with a new partner can be awkward in and of itself and being nervous and feeling uncomfortable can cause loss of erection. Exploring each other is definitely a great idea with any couple. You will have to find what positions work for you. It may take a bit of experimenting but it can be a really fun process. Many times it is in the angles, as has already been mentioned. Lost gave some good suggestions for positions. Perhaps trying more perpendicular pelvic may be an idea too, like maybe reverse cowgirl or him standing up with you laying perpendicular to the edge of the bed. Being comfortable and open with each other during experimentation will help with the awkwardness while you both explore what works for you as a couple. Best of luck and enjoy the process!

Right , I gotta ask (NSFW) what does that mean ?

NSFW = Not Safe For Work. I put that there just in case. although chances are someone who is on this forum is not at work but you never know.

Lostsoul: I knew what you meant I didn't see it as blame. :)

thanks everyone for your suggestions. :)

Thanks for the enlightenment Koko :) now I know, but I am at work and the ceiling didn't fall on my head :)

Koto I don't see this as much as being a weight problem as it is being inexperienced problem. .
Try spooning with your leg sort of over him - so that you are almost on your back and he is behind/under you. You could hold him inside you and when things get hotter he can move into a position where he is deeper inside?

Just have patience, relax and be open with each other. I'm sure it will work out.