Careers/Talents or Love?

I have a question. But to understand it you must read my, little paragraph. Hopefully, one or two answer atleast. This is very, emotional and hard for me but…here goes: For nine years I’ve taken karate and piano. About $80-$90 a month. My loving grandparents were nice enough to, pay it for me, and I dont know what I would do without them. Everything has been fine until, they told me I couldnt be with my boyfriend anymore, whom I love. It will be 3 years this, halloween. Well a week before halloween anyway. ^_^ But, I stayed with him. And up until this, last month or two, they said they werent paying for my karate/piano anymore, unless I left him. And I didnt leave him. So I’ve basically been on my own. I worked all summer and intend on getting a job. I want to show them I can do it. But my mom keeps, bringing it up. Like she keeps asking how im going to pay for it because they arent. And it hurts. I hate it so much when she brings it up. Because it reminds me of the two months my grama ignored me, and its just so hard. I would like support from my mom but She seems to think I cant do it. So to make her happy, I got fed up…and said fine. I would just quit. And I feel really bad. I dont want to quit. I hate giving up things…

Is it a bad thing to, let down my grandparents, for this guy of mine? I really love him, but I still feel guilty because of all the years they took care of my funds and how they paid my way. I dont know what to do. Career/Talents…or love? What do you guys think? Uhg this is depressing.