[The way he wraps around her, snuggles up against her, is comforting and soothing. She closes her eyes and leans back against him a bit. She takes a deep breath, holding it for a moment letting it sit in her lungs until it burns a bit before she exhales. He smells good, warm and rich, something earthy and woodsy.]
You smell good. [which isn't the point. She really needs to not be a chicken right now.]
It doesn't work out for me. Committed relationships, I mean. I want them to. I just...my life isn't very conducive to a relationship.
[But that's not a problem here, and Buffy knows that it's more than her life that's not conducive to a relationship.]
I stabbed Angel. I sent him to Hell. I loved him and I stabbed him to save the world. [She bites her bottom lip as tears fill her eyes.] I loved Spike and I let an entire town fall down on top of him. I watched him burn in a column of light and I let it happen. I knew when I gave him that necklace that something bad would happen to him because Angel wouldn't let me wear it.
[What she means is she's not fit to be a girlfriend. She will always choose the world over the people she loves and maybe it's because she has to, but maybe it's just who she is. either way, not the best girlfriend material.]