Bear in mind though your asking them to make out; which is fine, something they probably already planned to do. (as an aside your first line is bad in terms of

Bear in mind though your asking them to make out; which is fine, something they probably already planned to do. (as an aside your first line is bad in terms of a "shock and awe" opener. The second line is better not because of the "unduly offended" (that waters it down) but the "would you") If you asked them to sleep with you then success rate would shoot down (guaranteed; I tried it for a while just to see)