How should I ask my girlfriend to change positions?

Depends a bit on your girl. But generally girls like being dominated in sex. This means no asking but more so just do it or at most *tell* her to. Generally a bit of playful force is enjoyed by women such as you just flip them over and move them into the position you want.

You don't seem manly and masculine if your always "babe, can we do *** or ^^^^, will you try &&&&& pls?". Just take charge and see how it goes. Just try and put her in control occasionally when she really gets going also for fun.

I would think that women would appreciate it when a man becomes the dominant one during sexual intercourse. Next time when you two are doing it, just slow down, pull out and make her change position and then start again. This is a risky move as she may or may not appreciate you being the dominant one for a change. I'm not really sure what one would say or ask if you wanted to try a new style... Just calmly tell her to "go with it" when you go in from the back.

No normal girl will want to do doggy style. You can tell your inexperienced because there is no other reason why she would lead when you are doing missionary. Don't ask her. If she's normal she will say no.

Best way is to start off missionary style and then suggest to her to try it some other way to see how it feels. therwise, you just get her in the mood and just manipulate her into the position by getting out and telling her to roll over as you stroke her to cajole her to want to try it. Same goes for trying any other position including a 69 position for mutual oral sex.

If you are in a sexual relationship with someone then you should be able to have conversations about sex and what you both want or don't want and what you are willing to experiment with or not.

You just take charge start with a massage and wisper in her ear lets try something new I will take the lead. she will like that