I personally always do aim for an LTR but I hardly ever make it apparent.
I weed out the girl first meaning I test her to see if she's what I consider ltr worthy: loyalty, high maturity level or class, emotionally healthy, and of course if her looks come to par(7.5+).
I also check for red flags: She's a notorious guy hopper/serial monogamist, air-headedness, slvt status, level of b!tchiness, clinginess and has issues basically...
If they don't come up to par with my requirements for an LTR, I won't completely write them off...Sad to say but I'll take whatever I could from them....yea, im gonna have to bust a pirate move and just raid her for some experience =/.