<human>: Summarize the given text in a few sentences.

We have only been dating for a few months, but I do not have the feeling I had with my previous GF of 4 years who I was very in love with to the point of talking about marriage/living together/ kids. I realize that this is an unfair comparison, but I know that I will not have the kind of relationship that I am looking for with my current GF no matter how long we are together. I have read all the advice I can find about breaking up, and I know that its best to just be honest, which isn't really the problem. My problem is that I keep giving myself excuses not to do it.

For example, the family just went on vacation and I had already promised to house/dog sit for them. Now its the holidays. I hate feeling like I'm leading her on, which I am, but I cant seem to get away from any of my excuses, and I know I'm being a bit of a coward about all of it.

Does anyone out there have any similar experiences/advice/or rationalizations that may help me out?

Thanks
<bot>: I'm a coward and need motivation to get me past the excuses I come up with to avoid breaking up with my GF