He's playing games. Scorpios are known for being manipulative and strategic, so it's possible that he's playing games with you to get what he wants. He may be trying to make you feel insecure or jealous, or he may simply be enjoying the chase.
He's not sure what he wants. Scorpios can be very intense and passionate, but they can also be quite guarded and secretive. He may be feeling strong emotions for you, but he may not be ready to commit to a relationship. He may need some time to sort out his feelings before he's ready to move forward.
He's afraid of intimacy. Scorpios are often afraid of intimacy because they're afraid of being hurt. He may be interested in you, but he may be scared to let himself get too close to you. He may need some time to build trust before he's ready to open up to you.
He's busy. Scorpios are often very busy people, and they may not always have time for a relationship. He may be interested in you, but he may not be able to make the time to see you as often as he'd like.
He's just not that into you. Unfortunately, it's also possible that he's just not that into you. He may have been interested in you at first, but he may have lost interest over time. If this is the case, it's best to move on and find someone who is interested in you.
If you're not sure what's going on with your Scorpio guy, the best thing to do is to talk to him. Ask him how he feels about you and what he wants from the relationship. Be honest with him about your feelings and needs. If he's not able to give you what you need, it's best to move on.