I've been dating this girl for about 4 months now. Pretty much just sex all the time and don't go out much.

So lately, last month or so, she's been contacting me less and we haven't been hangin out as much. Just feels like it's fading out. We hooked up last Saturday during the day and neither one of us contacted one for the following week.

I was out drinking on fri with some friends and was feeling like she is just putting me on the back burner and hooking up with someone else.
Soo here's what I text her:

Me: Tomorow night, you, me...dinner and a movie. It's my last Saturday at the pad and parents are away. Haha
12:08am

Her: Haha. K
12:34am

Me: Cruz over around 7?
3:12pm

Me: ?
7:20pm

Her: Hey
8:28pm

At this point I was pissed she lagged and decided to not hit her back up just hang with my friends. It's Sunday night and we haven't talked.

Now I feel like a dumbass cause I like this girl. Do you guys think this is fixable or am I gonna have to take tie or as a loss? What would u do?