Thanks for translating this!

"you are a gift" not "you are gift"

"star hour" sounds like poetry, but you could also put "starry hour." Or even "starry night" if 'час' can be a period of time and not just an hour. translate.google thinks it's "hour of triumph"-- is it crazy, or is that an idiom? But the literal stars seem to match the sunrise better.

"Your hairs are cuddling me as a wind again!" isn't really English. You could say
"Your hair [almost always singular in English] is caressing [technically 'cuddling' is possible, but it sounds totally strange] me like ['like' is followed by a phrase with no verb in it, 'as' is followed by a phrase with a verb in it, or comes at the beginning of both phrases in a comparison] the wind again!"

"unfamiliar" is a hard one. It's going to sound strange no matter how you say it. Does it sound strange in Bulgarian? "Your lips are setting me on fire today as if for the first time" would be loose translation. It sounds strange to say that your lips are actually new or unfamiliar in the middle of a love song that otherwise seems to be talking about a long-term relationship, but that's what they sang...

"save it" doesn't sound quite right; it suggests that the magic is threatened by a monster, or that the beloved shouldn't spend all that magic tonight but rather save it for a rainy day. "Keep it' sounds a little strange too. "Don't lose it" or "Don't ever lose it" sounds better to me.

"in front of you" sounds awkward. "before you" would sound better but would be formal and old-fashioned. "for you" or "to you" would be a less precise translation but would sound more casual and contemporary.