agree, but sounding desperate is not attractive to men at all.

I agree it's tough to always do the right thing.
Usually men at this age 50+ have had marriage before and are quite cautious in starting a new relationship. Sex is usually not on top of their agenda. Using lewd slang will attract the wrong type of person. And let's be honest, nobody likes a desperate person. I know you are looking for a life time partner, but that takes time, to look for one, and to know him. Rush into sex will most likely ruin the relationship and cause later bitterness. Date more people and enjoy the process. And for your own safety, meet in public place, not at other's home. Good luck!