I don't /think/ there's a site rule against that, but you may have trouble finding a person who wishes to cast for a stranger, feels capable of casting for a stranger, and who looks fondly upon love magick.
May I ask what /specifically/ are you looking for in a love spell? Are you trying to enchant a specific person to make them love you? Are you trying to draw a non-specific person ("God, please bring me my perfect soul-mate, whoever the heck that is")? Are you trying to salvage a flagging relationship you already have?
You generally will not find another practitioner that will cast for you. Reason being spells work the best if it directly comes from you. Loves can be tricky especially if you're going for a specific person. Those backfire if that type of spell actually works in the first place. So if you really feel the need to attract love energies, keep it general and simple. You can make a mojo bag with herbs like lavender, thyme, cinnamon, paprika, etc. Or carry a rose quartz. Even wearing a soft pink with the idea of attracting love will work as well. Everyone has different ideas on the ethics of a love spell but try to remember that love is a gift meant to be given freely and not taken by force.
Love spells are usually 'not done'. I've done them in the past and ALL of them have 'backfired' on the people that wanted them. In one case the person 'thought' that the person they 'loved' was the love of their life. After the spell was cast they were together. You'd THINK that this was great right ? The object of affection turned out to be both a 'liar' and a thief and a slob as well. These things are NOT found out doing a spell. These things are found 'out' during dating etc etc. This person THEN wanted me to 'undo' the spell. I was sorry BUT I told them that these 'love spells' are for LIFE. Don't ask for something like this, it will always go bad as it took away his 'will' and he fought to keep her in his life from then on. She is now a wreck from it and there's NO counter to it !!
For the most part, mishal. A person's will is a very strong, very primal thing. Furthermore, in many views it is absolute; the True Will is the undeniable, unchangeable piece of who you are, and what might also be called your place in God's plan... not really something you or I have the ability to argue with.
With this absolute nature in mind, all bindings of another person's will would therefore be temporary. Have you ever bent a branch back and then let it go? It doesn't just return to where it was, it shoots forward with a LOT of force, often briefly overshooting it's natural resting position.
Similarly if you take a person who likes you or who is neutral and you bind them to make them love you, not only will they eventually break free, but it will be forceful and they will frequently overshoot their original feelings for you and go straight to hating you.
Love magick, in order to avoid this, should be encouraging in nature rather than binding. Use spells to draw the right person to you - YOU don't know who that is, but the Divine does - and once you have a relationship you can use rituals and spells to help keep the love between you strong, healthy, and vibrant.