Love feels lost

I have been in a relationship with my first girlfriend for a little over 2 years now and for the past few months we started getting into many arguments for the littlest things. We are an interracial couple. Lately I have been feeling like I have lost the love I once felt for her and when we kiss now, I feel nothing. She has been going through some problems personally. She lost her house and is being forced to move while also having to deal with college. I feel like the only reason I am still with her is because I feel bad for her and what she is going through. We decided to break up this afternoon and I felt good being single but then later tonight she called me asking to come over and she was crying and asking me to take her back so I did because I felt bad. Not because I loved her too. I have done so much for her that she loves me so much and I feel if I leave her then she will have a broken heart and never find someone else that treats her the way I do when I only do it to make her happy and not out of love. I recently started having feelings for another girl that I met at work, she is a new coworker, I went to a friends party recently and the coworker happened to be my friends sister so I started talking more to my new coworker. Later I find out that she has a crush on me and I have feelings for her. I feel like I want to be with her instead of my girlfriend. When I talked to my coworker, she makes me feel good and happy but with my girlfriend I don't feel as happy and I feel as if my girlfriend is only a friend. I don't know whether I should stay with my girlfriend or break up with her and go out with my coworker.

You need to tell your girlfriend that you have found someone else but you will still be there for her as a friend whenever she needs you. You need to be happy. Everyone goes through tough times in there life an this is one of hers. She will get through this. Do what's best for you and what makes you happy.