Casting a spell on him I agree you should consider being a last resort at most.
Something to know now is that you can't force a person to do something they would otherwise be completely and unquestionably against, even with magic. Maybe it's time you look at where your life is heading. Sometimes change is needed to get to the next step. So instead of looking for a quick fix by asking someone you don't even know to fix your relationship issues you should take this situation firmly in your own grip. I assure you, if it's meant to be you'll certainly be able to get him back without such shady and unpredictable measures (i.e. asking someone you don't know to fix your problems).
You need to be strong now and think carefully. Assess where you and your previous love stand. Speak to him about it and work from there using logic and reasoning. Remember to stay calm as well, capping your way through a website forum won't fix any of your problems.