No Longer Turned on by Going Down on Her

You said that your desire to give your girlfriend oral sex has diminished as she became more comfortable with you. Are you saying that you were using sex to win her love, and that once you were sure of her commitment to you, you didn't feel the need to make an effort any longer?

It is true that many men love the chase, and once they have 'caught' the woman, they stop making an effort. Meanwhile, women bitterly complain over the fact that men stop expending effort to court them, especially after marriage (the quarry has been caught).

I think you both need to view your relationship like a car. If you don't maintain your car, it stops running. She needs to keep making an effort to remain attractive to you, and you need to keep courting her.

I think you must speak about what is going on. If you don't, your feelings will only intensify with time. You both would also be wise to explore why you have stopped making an effort for each other and for the relationship.

There may be a vicious cycle going on here. You stop going down on her, she feels uncared for.