If you don’t want to get romantically involved with someone, don’t spend hours one-on-one.If you’re having good gospel opportunities with someone of the opposite sex, introduce them to some godly Christians of their sex.
The passage goes on to say that there is no harmony between Christ and Belial (Satan).
There can be no spiritual harmony in a marriage between a Christian and a non-Christian.
If they’re really interested in the gospel, they’ll be just as delighted to hear about it from them as from you.
If the Lord wants you to be married, he’ll make it clear that it would be possible for you to pursue such a relationship by them coming to faith!
I want to make the point that it is a matter of obedience to God getting romantically involved with a non-believer hangs on a couple of proof-texts taken out of context, then I’m pretty sure it can be removed by a couple of moments staring into a pair of eyes, some attention, and the excitement of a potentially fulfilling lifelong relationship.