Sigh* relationships are so hard..

I know relationships arent easy and im going thru a LOT with the guy I love. The first and only guy who really got to my heart and Im 27. Things arent going well and i want him but I feel like i should leave him and i deserve better :/ but before i do i wanted to ask you ladies what was the most u ever had to do or how far have you gone for that one guy u love & has ur heart like no other? Do u regret it? Was it worth it?? Are u still together and would u do it again?? I would do anything for this guy but i dnt wana be blinded and then hurt in the end after i see clearer because right now i think love is blinding me from the reality of it and idk if i should keep on :/