Aww hugs don’t panic sweetie, the haircut is not that bad! I think it looks really modern, and chic. Some guys like women with longer hair since it’s apparently makes them more feminine, while other guys like women with shorter hair cause it so stylish. So it depends on the guy your with, if he was totally into you, he wouldn’t have been so “disappointed” (I don’t know how else to say it) with your new hair-do c’mon, it should be “just hair” to him, not like “omg, I’m careless about the little kid following her cause her hair is shorter”, I don’t mean to offend you, but if a guy does that, that’s messed up. But I do understand how you feel. hugs again. Don’t worry about it, your hair will grow back soon. Get some biotin vitamin pills to help them grow faster and healthier in the mean time.
So for the makeup, accessories…
I recommend wearing longer earrings, glitzy, shiny,
for ex. Swarovski crystals in any jewlery is extremely shiny, no matter what lighting you’re in. But if there’s really dim light, your earrings will shine alot! Very glamourous imo, definately makes you seem very stylish and girlie. When I wear these, guys want to play with my earrings. (Don’t worry about the price lol, I buy mine from places like Guess and boutiques and the prices range from 30 bux and up)
Makeup wise,
I don’t think it’s a good idea to wear smokey makeup (unless you want to come out really really strong…)
Stick with lipstick and lipgloss to emphasize your lips, red/pinkish/plum lipstick will do. Show them what you’ve got girl!
Eyes, lots of mascara!!! Batt those lashes! and if you want to use eyeliner, just be a little light handed with it.
Blush! Makes you look more girlie and since you’re hair is short, it’ll definately make you look “younger” but that’s just my opinion
As for the Tah (girlie, soft, cuddly) or Tal (strong, sexy)…
I say stick with Tah, if you feel like no one is still not giving you the attention. Tah will make you look more girlie, and sweet. While Tal will make you look “too” strong, and unapproachable.
Others will give you better advice than me on this one lol I tried to help 
Anyways, I really doubt you’re hair is that bad. Maybe, you’re just not used to seeing it so short. I remember my mom cutting my hair above my shoulders and I cried, and rolled around, punching the floor cause I thought it looked bad, but then I was like 12 (yes, I’m immature)…hmm, it doesn’t count… Screw what I just said! but my point is that I started to like the look after a while! But anyways just stick to looking more elegant/glamourous and you’d be fine until your hair grows back again 
Hope it helped!