Don't text him or message him again.
I can't believe that some people are telling you off for being too non-committal or not warm enough in your last text! You went above and beyond.
Here's my reading of the situation (no doubt many posters will disagree):
You meet him for a date, you get on well, you have a snog.
He asks to see you the next day, then when you left you describe it as being 'slightly awkward' and he hugs, rather than kisses, you.
I'd say that on the second date he decided that you weren't really for him. His loss!
Some men are just like that. They have a fixed idea of what they want, try to see you all the time at the start of the relationship, and if you don't tick the boxes, they lose interest quickly. That's why it's best to space the dates out, in my view, but I digress. Some women, me included, would have left it there after the second date and thought, well, if he's interested he'll get in touch, on with the search!
You texted him to thank him, which was nice if, in my view, unnecessary. The truth is, if he'd been keen, he'd have texted you back that night. Instead, he waited until the next day and sent you a non-committal message. 'Glad we met' is a brush off.
You text him again, encouraged by posters on this thread. He doesn't respond. That tells you all you need to know.
This isn't your fault. It doesn't mean that you are unattractive. It just wasn't meant to be., and better to find out now than later. Plenty of men will think you are lovely. Just keep your distance a bit next time. Good luck.