Need relationship advice
 

nothing at all.

Make sure you aren't confusing your interest in another woman with being unhappy where you are. Seeing what else is out there is a normal part of any relationship.

The fact that the woman you broke up with was actually hurt by your break up speaks volumes about how much she cares - there's no sense in risking a person like that (who are very few and far between) over a possible relationship that'd have to cause a rift between two friends to work out.

You'll never find exactly what you want in a person unless you date yourself.

Question what's contributing to your feelings, look at the situation objectively, and think before you make any decision.

Good luck.

I would be extremely careful in this situation. You are already at a big disadvantage having your girlfriend and your next possible girlfriend be roommates. You also may want to wait until Lindsey has some time to cool down (something like 2-3 months) before you try anything. You definitely don't want a rebound relationship. They suck! I'm not sure how good of friends Lindsey and your girlfriend are but you may be left without anyone by trying to switch.