Planets - Nature of Affairs
The basic nature of the planets that get involved in a combination for affairs decide what type of partners a person has. Now as we know in most case just one planet does not define an affair so depending on the planets involved in the dasha at the time of the affair The qualities of the partner can be judged as follows
Sun
The native will an affair will some who will be in higher position. Possibly in a government job or superior position like boss or manager. Most probably, higher position than the native himself.
Moon
Moon will ensure that the partner involved will have the same position as defined in Sun but with a rider that person will be classically beautiful and might be older that the native.
Mars
Mars will ensure that partner involved is be in a position of authority like a policeman, judge, security etc. They will have a uniform requirement for their work or industry they are involved in.
Jupiter
Jupiter will ensure that person party in the relationship will be a position of mentor like trainer, teacher etc.
Saturn
The partner will be from a different work culture and would be a service based person. And depending on the placement of Saturn 7th Lord and 7th house the person could be older than native.
Mercury
The partner will be much younger from the native and will be have had multiple affairs before joining up with the native.
Venus
The person will be well educated from a good family background and will be classically beautiful and soft spoken.
Rahu and Ketu
The presence of either of the two alone would be make the relationship unconventional like being from a different religion, one of the 2 parties being diseased etc.