If you let someone use you, already knowing they do not love you, are you in lust with them?

I'm so sorry for how you feel. But ask yourself: "Could he really be a good boyfriend? What are my good qualities? What characteristics would I like my potential partner to have?"

Clearly this has been something weighing on your mind. When trying to make a decision, it's best to pray. 1 Peter 5:7 states: "while you throw all your anxiety on him, because he cares for you."

I hope this helps.