Slightly open to interpretation what you mean by 'deserving' someone.
In response, no - I don't really ever feel like I don't deserve anyone as that would imply I'm inherently insecure. That and I decided quite some time ago that any potential partner of mine needs to be an equal. I want worlds to collide, not to see one become dwarfed by another.
Although I am insecure at a base-level (we all are to some degree), my main concern - if any - would simply be the confusion and wonderment at what on Earth the said girl possibly saw in me in the first place. What is it that makes Nix - the messed up, introverted nihilist - so special? I'd accept her attention quite happily, but that wouldn't stop me from wondering if she's got me mixed up with someone else, or that she's genuinely unhinged enough to think I'm a suitable partner and by consequence perhaps building her up to be the insecure one.
But you know, I'd probably also realise that it's perfectly normal to go through these motions and learn to enjoy the ride for what it is.