If you want one, look for these things. If you don't want one, look for these things and then avoid, avoid, avoid.
Make certain your chosen partner's planets make no aspects to your Moon and preferably none of your planets touch their Moon. This is how you can keep from becoming emotionally attached.
Lots of hard Uranus aspects (Uranus square partner's Venus, Uranus opposite partner's Sun, Uranus Square partner's Mars etc.) While some people would not mind the on/off or volatile energy of hard Uranus aspects in a relationship, most will not enjoy this beyond the short term.
Minimal Saturn but preferably no Saturn contacts between you and your partner. This helps keep the relationship light and free of any karmic drama.
Enjoy Pluto contacts but DO NOT confuse them with LTR potential. Pluto provides heat, strong sexual passion and legitimately will get you out of bed in the morning just to go crawl into that certain someone else's bed. But it is often combustible, especially with hard aspects to romantic planets. So it really needs to be handled with care, especially if you were unable to avoid having it contact the Moon in either partner. If it does, this will not be an easy relationship to extract from and ending it needs to be handled with the utmost care and respect for your partner.