I met this girl a month ago, and things were going great up until now. The first day we spent together we had a great time, not a moment went by where we wouldn't be laughing or talking. Later that day while we were watching a movie she grabbed my arm and told me she really liked me, she then rested her head on my lap and fell asleep which I was fine with. From that day we hung out almost every day for 2 weeks, she would frequently tell me how much she liked me and she would always grab my arm or find ways to hug me.
But as the time went by I will admit I started to talk less and less and so did she. She now has a job, and although I've tried to stay in touch, she just doesn't seem as interested in me as she used to. Sometimes we might hang out but when we are with her friends she will pretty much ignore me and only talk with them... something I would never do... the polite thing to do would have been to try and make me feel comfortable around her friends. We're attending the same university where we both share a humanities course together, every class we will sit together but her same other friend will be there and they will be talking and giggling the whole time and i'll be sitting there looking like an idiot.
But it doesn't always seem like she's trying to ignore me. When we're in class she'll nudge me or draw on my book or play with my pen. Or i'll say some little thing that will make her giggle. I'm able to make her laugh easily, it's just we've never had anything to talk about anymore... she's so quiet around me and i'm trying my best to get a conversation going with the time I have with her but she'll respond with a "it's going good" or "not much". She just looks way less enthusiastic than she used to about everything and as much as I like her I just don't know how I'm supposed to respond to all of this.
I really felt something good was happening but now i'm not so sure. Any advice?