Met this girl online and have been seeing her for about a 3 months. It was pretty hot and heavy with non stop flirting in the beginning. Started having sex after 3-4 dates, and then regularly after that.

Our "relationship" is undefined, she doesn't ask me questions and I don't touch the subject. She's a nice girl, so i don't think she sleeps around. Yes i have other options, but I like this one the most. Not oneitis.

The last time we spoke was about a week ago when I asked to see her, but she said she had plans and that she'll let me know when she's free. Before New years, she would be texting me all the time with lovely dovey stuff. Texting and communication has died down significantly since.

Sent her a text last night, just a light joke and no response so far.

Is she trying to game me or has lost interest?

Most likely she lost interest as she met somebody else. She didn't see this leading anywhere so she kept her options open. It could be that you sent from the beginning the signal that you want to keep it casual. I will go out on a limb here and assume you didn't do any of the "couple" stuff during the holiday season. For many chicks that's a deal breaker...

I couldn't, she went back home and out of town. I gave her a xmas present though, a stuff dolled that she loved. She got back to my joke with a weak text : 'Lol didn't get a chance to respond! blah blah'.

Anyway to recover attraction here? Freezeout?

My guess is freeze-out will not work as she's trying to distance herself from you and a freeze-out would serve that very purpose... You have to get her to meet you in person. Invite her someplace you know she likes a lot so it's less likely she'll say no. Think in advance what you will answer if she asks the dreaded "Where is this relationship going?"

Matter of fact, all my FWBs have ended pretty much the same way, with her losing interest and becoming less responsive to the point of complete communication shutdown...