It's not weird, but it can be taken as an invitation to go farther. There are two things here. One, physical contact is one of the best parts of having a bf/gf, but if you don't want to go farther, you'll have to tell him upfront. Second, you should be careful to consider his desires. If you ask him to touch you in a sensual way, but then prevent him from going farther, this can be confusing and frustrating for him. Good luck!