<human>: Should I move on or am I overreacting?

I (F23) have successfully found a male (32) whom I enjoy spending time with. I never assumed I could get any further than the first date, but it seems miracles happen. He was really excited to meet me the first couple of times, was constantly texting me and spent a lot of money on our dates. Now I feel like he's not very interested anymore! We last saw each other on Sunday and we've been texting each other a bit (he initiates). Texting usually ends in something I've said or it just takes him ages (like up to 24 hours) to reply. Sadly whatsapp shows that he is still constantly online... He said we should organise something to do on the week, but it's almost Friday and nothing happened. I know he has a busy job (I'm a student) and that we live on different sort of schedules, but... :(

Since all our dates have been organised by him, I tried to ask him out last week. The first time he cancelled pretty last minute due to work. The second time I suggested something he just kinda faded out from answering, saying it was his friends birthday. The next time we met he mentioned he'd not done anything on the night, probably having forgotten I'd asked him out then. I then decided I should probably not try to ask him out again as he didn't seem very interested in rescheduling or anything, but then after a few days he asked me out again.

So dear reddit, tell an inexperienced person if I'm being too hasty or if I've had plenty of hints of how this guy has moved on to different ladies already!

Can you condense the text into a few key points?
<bot>: Met a guy, went out couple of times. He was really into it, not anymore. Not sure if I should have understood to move on already or if I'm just jumping to conclusions.