There are a few things you can do to get your crush to follow you on Instagram. First, make sure that you are following them back. This will show that you care about their posts and will be interested in what they have to say. Additionally, make sure that your posts are interesting and engaging. This will show your crush that you care about them and want them to follow you back. Finally, be sure to post regularly! This will keep your crush engaged and likely follow you back as well.