How to believe him now?

u have been wid this guy for four years!! if tht is not reason enuf 2 believ him thn u probably shudnt b wid him. has any behavior of his in these yrs told u tht he loves her n not u?? dont linger on a silly joke or whatevr it was. he proposd u n not her so jus get over this n b happy wid him.