Head games

OK so my ex who broke up with me a couple of months ago came down Christmas Eve to pick up some things of hers. She had already texted and asked if she could spend the night, since we had decided to remain friends I thought this was no big deal.

During the day Christmas Eve we were chatting, and hugging about the recent loss of our beloved dog, hugging led to the bedroom where we layed on the bed chatting, after awhile we were both naked and fucking like horny teenages :)

Christmas day she packed up and left to spend the day with her family, on her way home she texts me and said I love you !!!

Now I wondering if this happened because of the emotional time we was going through, was she just horny and wanted sex ( I do have a nice thick cock lol ) or did she still have real feelings for me and regretted breaking up ? She has texted me since and we have chatted for hours with no mention of what happened.

I am the kind of guy that likes to know what's happening and not have a ton of unanswered questions bugging me, I don't want to mention it for fear of ruining our "freindship" .

What does it mean and why do people have to play these head games ???