Should I trust him or leave him?

Me and my bf been togethet for four months. From day one he has lied ti me. He lied about everything from sleeping with his ex wife,having a job,getting a divorce,having a . Just evething. I am so in love with him,but I dont trust him and I dont know if I should stay or go. He has sincr moved back in with his dad but I dont believe him. Im so confused please help me.