<human>: I went out with Jackie for about four years. I broke up with her about two months ago because things were long distance and that distance didn't seem likely to get fixed.

However, I think I'm still in love with Jackie. Perhaps the holidays are especially bad for this, but I'm up crying and listening to Bright Eyes, thinking of all the things we shared and all the experiences we had that I'll never really be able to talk about again. I'm not usually like this, but I don't usually let myself dwell on this type of thing. 

Two issues:

A: I've started going out with a new girl, Kendra, but I don't really want to get into a relationship with Kendra until I'm over Jackie. (Make sense?) So I've been taking things really slowly with Kendra, who probably just thinks I'm the least affectionate date in existence. Any way I can fall out of love with Jackie as quickly as possible?

B: Another girl, Wendy, seems to be really into me and I'm attracted to her. However, she is very similar in appearance to Jackie. I don't think that's why I'm attracted to her and I think she is a better fit for me than Kendra, but I don't want to be making some classic breakup mistake. Is there any "rule" about not going out with a girl that looks just like your ex?

Can you summarize the given text in a few sentences?
<bot>: I'm still in love with my ex. How can I fall out of love quickly so I can fall in love again? Is dating a girl who just happens to looks like my ex a really bad idea?