.. it seems that i cab slightly relate to your situation.. but i want to begin with a verse..
1 TIMOTHY 4:12
DON'T LET ANYONE MAKE FUN OF YOU JUST BECAUSE YOU ARE YOUNG.. SET AN EXAMPLE for other followers by what you say and do as well aw by your love faith and purity..
this verse definitely explains your situation and i just want to stress out that i am a 17 years old kid from Philippines and english is not my native language either.. about this "scientist".. i just want to remind you that God said that His words will never be used in vain.. and making people understand the word of God and giving them the heart to submit to God is not our obligation anymore.. it is already the work of the Holy Spirit,, the only thing we have to do is to share God's message and it already depends to that persons on how he will take it,, actually, i read some of your posts here i dont want the way you answered other people's comment in your thread.. just saying.. ^^
there will always be persecutors in Christian life and we should be thankful for them because it only proves that you are a son of God.. it is also a challenge to you given by God in order that you'll grow and He trusts you enough that you can manage to overcome the discrimination but well, it is a hard truth to conquer but the Lord is our armor.. for the mean.. we should pray for that first.. nothing is impossible with it.. God doesn't want His creatures arguing or debating about is creation.. and you said that He is a scientist who believes in these theories.. and you are a christian.. the implication there is that you are more mature than him spiritually.. and you also said that you tried to share God's message? the final step for that now is to pray for it.. well.. i do believe that God has a reason why He put you and that scientist in one lounge..only God knows about that and be delightful.. God used you as a blessing to him and i know there's always a part of us that will bring us back to our creator.. that "scientist" might be in search for the truth and God led him here.. let's pray for him.. praise God for giving e the chance to read your thread and say something about it.. God bless..