My limited knowledge on the subject says that Doug's advice is generally way off, but there are people - probably of both genders - for whom there is a bit of truth to it. Only a little bit though.
Don't be late without warning if you can help it, that's just being a dick. And don't be late often, then you're just bad at being on time.
For the most part though, don't appear as something you are not. False impressions will only lead to relations that doesn't quite fit.
Doug's additional advice in next week's strip will give further illumination into his strategy. And I don't think it's a spoiler to tell you his advice doesn't get any better.
I was just wondering if FF's friends are going to give her similarly bad advices.
Also, the way I understand it, she does not have a 'secret identity' and everyone pretty much knows her civilian identity as (Princess?) Cyanna.
Which would mean that she cannot be anonymous while going on a date.
Femme's friends have already weighed in on Clark in the previous scene (which started this episode). But they messed with Femme probably as much then as I suspect Doug is messing with Clark now.
And the lack of anonymity will definitely be addressed.
