I am Male, 5 feet 7 inches, 250 pounds and 27 years old. I have a family trip coming up in August and I'd like to be in the best shape possible. What would be a good strategy to do this?

Has anybody dropped that amount of weight in a similar time? I've also never had a girlfriend, a date, or a kiss. Like I mentioned I'm 27 and I think my weight could be holding me back from losing my virginity. Anyone been in this type of situation and improved? Thanks.