<human>: Could you distill the essence of the text into 1-3 sentences?

I started dating her back in March, and things were going great.  As we started to get deeper into our relationship- she started to notice that I had a hard time being aware of her emotions.  We talked about it many times, but for some reason I had (and have always had) an issue with showing others I love them/being empathetic.  The last two serious relationships I was in ended the same way.  Me not making them feel like I cared and not being aware of their emotions.  

It feels kind of draining.  I don't have a very close relationship with anybody in my life.  It hurt so bad to end things, but I didn't know what to do.  I've felt like something has been wrong with me for some time now.  

I genuinely love her and want the best for her, but I didn't feel like I could be the person she deserved.  She tried to be understanding of my issue, but I could tell that it was tough for her. She's given me so many chances and I finally decided to stop hurting her and let her go.  I would get upset with her when she was telling me how she was feeling in reference to my lack of empathy. I couldn't really understand why she was upset. I think I was really just angry at myself.   I get kind of envious sometimes when I see the relationships people have with their significant others and family, and wonder why I can't have the same. I'm really crushed.  She was such a great girlfriend- especially considering what she had to put up with.
<bot>: I have a hard time being empathetic in relationships.  Past two (and recently three) relationships have ended because of my lack of empathy.