I personally don't read for couples. Never. (Anymore.) The tarot -or whatever means of oracle I use- mirrors every very significant thing which involves the couple, their past, other people involved, and their probable future together. It disturbs me. The moment I connect with their energy I start seeing visions/feeling things and the cards acts as a tool, as they are...
Once a couple wanted to get a reading from me, while I was doing this business for money.
The woman was curious about their future together... And the moment I saw them I felt something was amiss with them.
Progressing on my path further, I've learnt to detach myself from the situation/other people's stuff, but back then I was younger/less experienced so I couldn't help myself simply falling into a trance. I've told them everything I've seen. There was another woman, the guy was married, with children, living in a house as such and such, they (the couple getting the reading) were fighting a lot, they were soon to travel somewhere and...
Everything was confirmed until the last thing I've said about them pertaining to their future.
They were to have a big fight there too, which would probably set the doom for their relationship. I don't know if this came true...
The woman was rather unsurprised, but the guy's face was white with fear. He was trembling while he handed down my money, and they left the place in a hurry, as if escaping. I've never seen them near the cafe again...
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Now that's what professional readers don't do (or cause), but even later when I've found more detached, constructive and still honest (in short, evolved) ways of doing a reading, I still don't like to see when a girl is crazy in love with a guy and he is and asshole.
If a relationship is smooth and really positive, then no couples need me (or shall not apply to me) since I'm not doing this for entertainment but for guidance purposes. BUT if my help is needed to smooth/solve out a problematic relationship, I am in and I will do whatever I can, as a coach (with intuition skills), not a fortune teller. I just have to see that both parties are eager and honest, and are not playing with each other.