Is it wrong to pray for your 'worldly" boyfriend to return to you, if you are a Christian?

Let's say you miss him dearly, and want him to return, not only for your love for him, but also for his salvation's sake, and general improvement. the reason for brake up was incompatibility (after 1year) because when you were in the "world" you two fought alot. Now you feel you can love each other and be happy even though he is still "worldly" and you are a new woman in Christ.