Typical romance short stories. Nothing spectacular, but not really bad either. Nice variation of characters, scenarios and endings each time. Only thing I didn't quite like was the fact that it partially felt recycled. Some of the characters did look exactly the same over different stories (and compared to other work of this author as well).
1-2: Girl falls in love with a 'player' dude who finds it easier to just have fun with no strings attached
3: Dude confesses to his childhood friend
4: Dude falls in love with some girl and tries to get her attention by constantly teasing her
5: Pretty much a short version
of 'TiG-HuG Planet' from this author. Same looks, same name, same personality. Dude is a complete airhead who doesnt speak much and is rather unsociable. The girl is different though.
So, if you liked the 5th story (or the male character in it at least), then you should read Tig Hug Planet as well.