<human>: They're devout Muslims. Dating is forbidden so even though I've been with their son for 5 years I'm only meeting them now. They only found out about my existence two-three months ago. 

I'm a university student. I'm shy and nervous. I'm also Muslim but they don't know that. I also am not very religious. 

They also do not know we're engaged as my partner hasn't proposed to me. He plans on doing it July fourth weekend. I guess we'll tell them together about the engagement when I meet them one week post proposal. His parents also think we're just friends for the last two years. We didn't knkw each other till two years ago. This is the lies he tells them.

So simply what do? I've never met parents much less future in laws! I would love some advice from those who've done it before. Also should i continue the lies? Or tell them the truth?

Condense the text into a few key points
<bot>: Was hidden for half a decade. Now I'm meeting his parents as his fiancée. How can I make this go over well?