stop banging her to hard and fast.
Most likely, he does. If you know that's not the case, he is trying to gently let you down.
If mean she/he wants you as a girlfriend/boyfriend
When your girlfriend says she does feel like you are dating, you need to ask her why. When you find out the reason, you need to try and repair the relationship.
lots of love
It means your in buddy
That he likes you and want you to be his girlfriend.
I presume you mean driving a car, and you put your foot down to 'go harder'. :)
It means you need to improve your communication skills.
It means that she doesn't want to have a relationship like that right now, but down the road, or in the future, it could be possible that you could have a boyfriend/girlfriend relationship.
she wants to be with you forever/ your relationship is forever
It means that he likes you a lot and would probably date you if he did not have a girlfriend.
It means she's not your girlfriend any more.