LAW has good points

but my thinking is....is she too big or too long? That may sound odd, but as with each penis, a vagina may have different langths and widths.

Ok, from personal experience, my honey hole is not very long, so anything longer than 6 inches ramming my cervix and back vaginal wall can sometimes be a bit painful. I have had to end up taking a little bit more control in sex sessions so that i only let it be the "feel good" kind of hurt.

Women also have the slight advantage of doing Kegel exersizes to make their pelvic floor muscles toned and thus doing so, making her feel tighter as she flexes (Yes i know that guys can use their pelvic floor muscles work too, i love it when they make their dicks dance!) Maybe your gal can do some toning up...she'll feel smaller whilst you are in her and you will feel bigger?

Another technique, and a bit on the kinky side, but i like it, is while you are inside her, reach down, massage her clit and then insert a finger in her at the same time you slide in and out. Or have her do it. The sensations are just out of this world!

But whatever you guys do, remember, it is truely about pleasuring and being pleasured, and enjoying each other's body, and the emotional bond that is there.