You know, meeting guys like you those days is quite rare. I just love those values of yours!Anyway, back to your problem.Worries number 2 and 3 are entailed by your paranoia, by your fear. You are trying to find reasons and arguments that will convince you not to go for it, because you are afraid not to make it work. So, in my opinion, your real worry, is number 1. Does she like you? Does she share the same feelings? Now those are questions that will resolve all your worries..To find out, there's only one way: be straightforward. Tell her everything you feel. I know it's risky, I know it's difficult. But it's the only way to find out. She has never dated someone before, so a rumor concerning her and her love life will surely annoy her. That doesn't mean that in reality she will reject you and that she doesn't yearn for being with you. Communication is the best solution for all our problems and worries.If you really love her, if you really want to be with her, just tell her.And then, there will be two possibilities:- she'll tell you that she has the same feelings- she'll make you understand that for her you are a great friend, and that she'll always love you in that friendly way.In both cases, your friendship won't be altered. So you have nothing to be scared of. If she tells you that she loves you as a friend, then, you'll overcome that reality, and you'll someday meet another girl who corresponds to you. You're friends since Kindergarten!! She just won't let you down, in both cases.I really think you should be honest to her. Tell her everything. This is the only way you'll be able to find out what are her feelings towards you. And then, start thinking about how to succeed and how to build a family.First is first: talk to her.Good luck!