Is it okay to send a facebook message like this to my crush?

I am 19, and I have a crush on this 21 year old girl at my college. Both of us did summer, and I got to see her at the gym almost everyday. We have talked a few times, and so far I get a good impression of her. She is also a housemate of a female friend of mine. Anyway, now I am home and I didn't get to say goodbye to her last week. I wonder if it's okay to send a facebook message like this. I don't wanna sound like I am really really into her, but I am hoping to build a good relationship with her. I'll refer to her as J





Hey J, I didn't get to say goodbye last week cuz you didn't come to the gym on my last day. It was my pleasure to meet you, and I hope you enjoy the rest of the summer. See you in September, and take care.





Is it okay to send something like this? Or is it better to do nothing at all?

Is it okay to send a facebook message like this to my crush?
too formal. just say something like "hey what's up sorry i didn't get to see you before we left hope your summer is good." you're overthinking this, man. cool out!
Reply:add "september or sooner" you gotta be bold
Reply:You're trying wayyy too hard to be formal and nonchelont. Just say something casual.





"Hey j, sup? Just droppin in ta say hi, see how life's treatin ya."





dig?
Reply:******* send it, that's perfect.
Reply:oh, that's great. It sounds like you are friends with her, and you didn't forget about her. that's nice
Reply:I think the message is fine and so go ahead and send it.
Reply:It's nice, casual, but the 'It was my pleasure to meet you' seems to formal. It kind of sounds like a 'I had a good time, but I don't plan on seeing you too soon' even with the 'see you in September' Maybe substitute something else there. But other than that, yeah, it's good. Not stalkerish or obsessive at all. =]
Reply:WHY ARE U ASKING


!!!!!!!!


JUST go!
Reply:sounds good dude. send it. Wahts the worst that could happen?
Reply:Sure send it! I'm sure she will appreciate it!
Reply:i think it's really nice. i would say it's ok to send it.