Hi, TinkerBell!

When you are ready for the penetration, you might find this tip helpful. Get on all fours in the doggy style position. Have you man kneel behind you and have him line his erect penis up with your anus. Instead of him thrusting into you, have him be still and not move. When you are ready, just back up onto his penis. This way, you get to control the depth and speed of the penetration. I hope that helps!