Not only is it normal, but also it’s natural for human beings to have sexual feelings. That’s how the human race continues to evolve.
The thing to understand is where these feelings are coming from. If it’s only for pleasure-seeking, then it may not be the right for a relationship that is expected to last a lifetime.
If you truly love her deeply, as you say, then the desire for intimacy may be related to those feelings of love. Only you can determine that. Give it some thought.
Once you get in touch with your feelings, you also need to consider her feelings. Do you know how she feels? Are the feelings mutual? Is romance involved? Or is it just lust? Do the two of you feel passion for each other when together?
Discuss all this with her. Find out what’s going on for her too. Then you can determine if you are both emotionally on the same page. If either of you is confused about your feelings, take it slow. Time will tell what’s right and wrong.