squeesome
1: something worthy of squeeing
2: something very cute and adorable
3: something worthy of fangirl obsession

Basically, anything that makes a teenage girl squee is squeesome!
Alyssa: So then, after he gave me the flowers and chocolate, he played me a song that he wrote for me.
Miranda: Really?  Oh my god, that is so squeesome!
-OR-
Alyssa: I love Johnny Depp ..
Miranda: Yeah .. he is so squeesome .. *sigh*