Hi Hector,
If you have some experience in relationships and have been in love in the past, you would know what that feeling is like.
If you have been in a relationship for a good amount of time with your girlfriend and have remained unhappy because you know that you are not in love with her, you made the right choice in breaking up with her.
Allowing yourself to indefinitely stay in a relationship where you are unhappy would be detrimental to the both of you.
You would not be able to reciprocate her love and she would not be able to experience your love.
She could probably sense a lack of reciprocation on your part.
That is why she would keep asking you whether you were in love with her.
Though it may be painful for both parties involved, staying in a relationship that isn’t emotionally fulfilling to you would only hurt the both of you in the long run.
By breaking up now, the both of you can hopefully move on to relationships that are more emotionally fulfilling.