No, I think, although I honestly wouldn't put it past me. However, knowing myself I'd likely go in with ulterior motives but because I'm not a total jerkass like that I would actually make the attempt at being their friend or attempting to gain a romantic interest in them. Really it's highly unlikely I'd do this because I don't like people so why would I want to? But if I had a powerful enough motivator, I could, and might. But I'm not heartless enough to use a person for something and leave them after I get it or anything like that. Unless my motivator is revenge of some sort, then I might do something like that.
Overall though, even if I have ulterior motives for something or involving someone I wouldn't be able to pull anything off without attempting to establish an honest connection with them. I just can't completely and utterly fake interest in something or someone like that, no matter how powerful the motivator (unless it's revenge, then I could). But excluding revenge, then I'd probably go in with ulterior motives while at the same time doing my best to like them for who they are, while at the same time trying to obtain my goal. That way, once I'd finally get what I wanted from them then I may very well have gained a new friend or romantic interest in the process - so therefore I wouldn't have a reason to just throw them away and they wouldn't feel like they just got played by someone. Even though technically they had.
This is why I say "no, I guess" because I'm actually unsure if I have or haven't done this before. Like I said, I do not like people, yet I have relationships anyway. There has to have been people I'd gotten to know for some ulterior motive at some point in my life.
However, in general, there's likely not going to be that strong of a motivator that would cause me to do this. While I can be manipulative and underhanded, i really rather dislike it unless the person I'm playing against interests me for some reason. Or if the only way to obtain something honest is to manipulate the **** out of them, which does and has happened. Although in those cases the manipulation was for the sake of gaining trust, and I was honest, the whole point though was to make them crack so that they'd be honest with themselves. If I came right out and accused them of hiding behind a mask, they'd have just laughed it off then denied it further. So that's the only other time I get manipulative, but I tend not to lie, I manipulate using the truth and/or my observations. But manipulation in order to obtain something more material? No, I probably wouldn't do that unless I had a very powerful motivator (other than what I'd be after I mean).
In short, I don't think I have, but I have the capacity to do so on some level, it really just depends on a whole bunch of reasons. But like I said I probably wouldn't just get what I wanted then leave them, that runs the risk of them getting really pissed off or hurt and people can do some pretty drastic **** like that. So I avoid ****ing around with peoples emotions like that. So even if I did get what I originally wanted from them, if I liked their company then I'd stick around. Even if I didn't like their company much though, I'd stick around for a bit after that then set it up to where it just seems like we drifted a part. But it would be a slow process.