AF and OutToGetYou speak sense. You sound really invested in this relationship, when perhaps it should be more about what he is bringing to you at this stage. Keep things on your terms.
Don't worry about not understanding withdrawal - you know now :)
Typically, you don't want to be doing a lot of running around and research and "understanding" in a new relationship. It should be fun and carefree - not stressful and confusing (even if the stress is only limited to one issue). I would have done this myself in the past, and thought that it was a totally normal thing to do, and that anybody who ended a relationship over it was being heartless, and poor bloke, he can't help having his own issues, and does that mean that anybody who isn't totally "perfect" doesn't deserve a relationship?
(It doesn't mean that. It means that when considerate people have issues of their own, they don't place them in their new partner's lap and wait for them to sort them out or get used to them, they work on them for themselves and get themselves ready for a relationship.)
Secondly google is a rubbish place to look for sex/relationship advice because there is so much crap and weird myths floating around on the internet. Trusted sources only! Wikipedia has good info on contraception and so does the NHS website. I really like www.baggagereclaim.co.uk/ for relationship advice and mumsnet in general gives good advice especially over the course of a thread - not always in the first few posts, but once there's been a chance for myths to be corrected.
Don't fall into the trap of clinging wildly onto the first man who has treated you nicely. Have high standards! Your life is really, really important. Who you choose to share it with is also important. :)
Good luck!