I guess that depends. If you sense he’s being hot one minute and cold the next, my advice would be to rather keep your distance. There’s nothing worse than someone who chooses to give you some attention when it suites them. If you do pick up that this is the case, then let him go. If however you sense he’s maybe a little shy and doesn’t quite know how to approach you, then don’t be too hard on him. Some guys are scared they do too much too soon and will ‘cool things down’, and that may seem as if he’s giving you mixed signals. If need be, take the lead. Let him know you like him and you’re not afraid to show it!