Happiness

My boyfriend just asked me if I was okay to which I responded yeah I'm okay. I promised I wasn't lying and I wasn't.
I promised I wasn't because currently I'm flaring up with my knee. It's very swollen and very painful, so why am I okay when I am in a lot of pain, and I really am both okay and in a lot of pain.
I've been thinking about this a lot in the last day or two because really it makes no sense. I won't lie there have been moments when I've been very angry and frustrated with it all but generally speaking I've been unnaturally happy, much happier than I probably should be, considering the pain I'm in. So why? Why am I so unbelievably happy?
The simple answer is my boyfriend.
He makes me happier than I could ever say or attempt to explain. He has literally changed my life. I was in this horrible rut, doing the same mundane things day in day out going along hating my job feeling really lost having just finished my degree, I was stuck.
He has somehow brought me out of a darkness that I didn't even know I was in, he's smashed my walls and changed me. The affect that another can have on your life is completely understated, it's amazing. I love him so much, he's got no idea how much or how much he means to me.
Despite the amount of pain I'm in right now I am happy.