While these are two clues it seems easy to spot, distraction is a skill many bigamists know well. Taking distraction out of the equation is helpful when ferreting out information on a date, but it takes concentration. An escort agency can assist with learning this skill, and they can provide their client with escorts who will teach them how to spot subtle signs.
People who are professional companions need to be able to understand what is required of them quickly, and subtle signs are one way they accomplish this task. They read body language, listen for hesitation in speech and they also note when a client avoids certain subjects. All of these can be taught to a client who has been in a situation where they feel overwhelmed by what has happened in the past. It may take more than a few sessions, but this is a skill that can be learned.
Contacting escort agencies is a good way to learn how to determine when people are hiding facts, and they can provide professionals with years of experience. Rather than wondering if they will be able to tell if the next person is hiding something from them, a dater can now learn how to read the subtle signs that will make their next relationship one where they will not need to worry their partner has multiple commitments.