Im a Christian about to marry muslim any advice?? ?

He's Egyptian Muslim, im a Christian we both like eachother, he wants to get married in a mosque this week but he said he wants to keep it a secret from both of our families till time is right then we can get married legally he also said he can't keep seeing me till hes religiously married and he said he wants to express his love physically and that hes not using me, should I trust him that hes keeping it a secret now ??