what fingering should i use here?

e|-15-14-12---------15-14-12---------15-14-12-----------|

B|----------15b(17)----------15b(17)----------15b(17)---|

G|------------------------------------------------------|

D|------------------------------------------------------|

A|------------------------------------------------------|

E|------------------------------------------------------|

right now im using my ring finger for the 15, middle finger for 14, pointy finger for 12, and ring finger for the bent note.. it doesnt work very well... but i cant figure out anything easier

I would actually just use that.
I always use the first 3 fingers when I play up at the hihger part of the neck (12th fret and up)
Though you could try it:

15= 4th
14= 3rd
12= 2nd
Bend= 3rd

But I am more comfortable with how you do it.

yeah, its kinda hard to get my finger back the the E string after the bend tho

Okay, well then:
After you bend use your 4th finger to hit the 15. Ring = 14 Pointer = 12

Maybe that would be better.

Or:

When you do the bend with your 3rd finger; put your finger on the first and second strings.
This is hard to explain, but I'm trying lol.

Kay you know when you do arpeggios when your sweeping?
And if there is an arpeggio where you have to play the same fret on two strings? Well you "roll" your finger there, to get to the other string.
So what I'm saying is when you do the bend, when you finish it, "roll" your finger back to the E string.

Does that make any sense?
If it doesn't I can just make you a video describing it.

yeah, thats kinda wut i do.. cept when i roll it the part between my middle knuckles hits the strings.. maybe what i just said didnt make sense

Try to just use the first part of yer finger, like before that first knuckle/line

i would use my middle finger on the bend. it may be a further reach since you have to fret the e string 12th with your index finger first, just reach quickly with middle finger to the bend, as you bend up you will automatically make room for your ring finger to fret the 15th e string again. if you then have strength trouble (bending the 15th to 17th) because of the awkward positioning, quickly move your index down to the same string and help bend it along with your middle finger. i tried it and i ended up having trouble bending so i used my index to help. something else you may have trouble with (as did i) is the release from the bend. since you have to immediately release and follow your ring finger on the e 17th with the middle finger 15th, that doesnt give you much time to release and silence the bend and the string itself from resonating while open. smooth and swift my friend!

If tht doesn't work, try using pinkie for 15, ring for 14, index for 12 and ring + middle for the bend, and you'll have room for to fret the 15 on e like goat rider said (only with pinkie instead of middle)

You could play the 10th fret on the E string instead of the 15 on the B.
That way you are bending with your pointer finger.