I'm not a fan of the "Sacrifice myself for my love" without the confessing. If he'd confessed, been turned down and still stayed, then I might have bought it. Maybe I've been exposed to too many romance plot lines where this is far too contrived. Glu suffered even more from the lack of follow through than the ones I'm used to.
I think real love isn't the sacrifice--especially the one way. It's the getting along together and working through problems together even when you don't agree. It's the working through loose socks in the couch, the toilet paper is the wrong way--the every day events that slowly can irk a person and working through those issues with that other person. It's more Shakespeare talking about how the imperfections of his lover are what makes him love his lover even more. As one show put it, "I want to go grocery shopping with you." (Necessary Roughness)
I also had a minor nitpick where he'd put part of his heart into the lover's body. I would have bought it if the previous paragraph hadn't gone into all the technical biological jargon. As in the metaphorical heart, but it bothered me when it was the physical and it went into meta science. The actual seat of emotions is in the brain mostly the amigdala and the pituitary gland. The sexual organs also play a role. Last two being the major ones. Emotion can also be triggered by the frontal cortex, but the hormones don't sit there. If you're going to talk about nerves, the technicalities of cancer, etc. Then launch into how the heart contains physical emotion... I'm not buying it. Adrenaline from the pituitary gland creates the heart pumping more, not visa versa. The feelings of euphoria are mostly seratonin and endorphines. That given, scientists don't know what makes love, the complex emotion happen and persist. (i.e. they can't make someone love someone else).
I've been hearing this lecture since I was five down to the level of neuro receptors...
Anyhow, the point is, stick to either meta science or science, don't mix them back to back, unless we're going to the brain as a sweat gland via the Egyptians.
I was on board until the cancer and the sacrifice bit.