Ok, I will make this as brief as possible, I met a girl last summer at a bar, shes a friend of a friends sister. we started talking and started getting physical a week later from then. we started going on dates but she goes to college somewhere out of state. as the summer ended she started getting emotional, but we moved on. in the fall we stopped talking there was no reason to and when she came back she was cold/bitchy when she was with all of us and her brother at a local bar. now the girl decides to message me on Facebook saying "I'm in Prague and at this oldies club they played dire straits. Thought you'd appreciate it. Hope all is well! I know this is random haha"

we started having a conversation and asked when she was coming back, which is this week. I got to say the whole summer was great last year physically both of us had a lot of chemistry but she is young 21, me being 25. I have a feeling she wants to rekindle.

Should I wait it out and ask her to message me when she is back?.

She was fucking someone else during this period of time. She had no use for you then.
Bullshit, not random at all. She is no longer fucking the previous dick, and is testing the water to see what is available when she comes back.
Don't "Wait it out" Go on with your life, but yes, tell her to contact you when she gets in.

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They call me the cat whisperer, cause I know exactly what the pussy needs.

Wow, what a jump in logic from cold/bitchy to "she was cheating"...sounds like you're projecting from a previous experience that happened to you.

this is all good advice, believe me it was never a serious relationship, she was only available for the summer and I could care less who she fucked while at school and what not. she was just wicked bitchy when she came back for a week we never texted and it was immature for her, almost as if she forgot we fucked for 3 months straight. anyways she comes back sunday, and we have been back and forth chatting. I'm just wondering a way to let her know " I dont give a fuck if we see eachother but if you want to get together and do what we did last summer then i dont care". or get her to chase.

Just a simple, "Hit me up when you get to town" is all you need.

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They call me the cat whisperer, cause I know exactly what the pussy needs.

I didn't see any cheating here? experience, yes. That's where advice should come from.

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They call me the cat whisperer, cause I know exactly what the pussy needs.

exactly.

Gotcha, so I shouldn't be the one to reach out to her then? wait until she messages me letting her know that she is back.