What does it mean if a girl laughs at a guy's sexual jokes?

mlrock
I met this girl online and we had gone on a date. While we both agreed that we couldn't see each other getting involved romantically, we also agreed that we could be friends. By her own admission, she hadn't ruled out the possibility of hooking up with me without commitments, a sentiment which I shared.

For the next two months, we are a distance from each other, but we have remained in communication via text, Facebook, and Oovoo. In our exchanges, I will often flirt with her by making sexually explicit jokes about whatever topic we're discussing. In response, she always seems to demonstrate amusement at my remarks as indicated by her extensive use of "lol," "hahahaha," or other symbols indicating laughter. I must also point out that my flirting is by no means subtle.

Based on this information, does it sound like she just appreciates that kind of humor, is sexually interested in me, or do you need more information?
What does it mean if a girl laughs at a guy's sexual jokes?
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