Dating a much younger woman from Eastern Europe for ten months and having lots of fun, but no signs of love or intimacy, is a disaster waiting to happen. If she were interested in you in that way, she would have let you know it by now. It's obvious that she has a different agenda than yours. Your attempts at romance have been rebuffed and I think you really know why - she's not sexually turned on by you. She likes you as a friend but not as a lover.
Romantic relationships start with intimacy, small romantic encounters leading to larger ones.
You touch, you kiss, you spend intimate hours together. That's a big mistake. It's also a mistake to see yourself as a potential husband to someone who shows no physical attraction for you whatsoever. It's always possible that she would marry you for other reasons, like security or companionship or fun, but I don't think that's what you would want. You are correct that she might be spending all her time with you because she sees you as a potential husband, but not because she feels affectionate towards you.