It’s common to think that a cheating partner will lose interest in you sexually. The thinking behind this is that they want less sex because they are getting it elsewhere. This can actually be the exact opposite. Your cheating lover may be feeling more sexually charged because they are getting new and exciting sex elsewhere. You may find that your sexually activity actually increases unexpectedly. Sex has a sort of chemistry. You know how sex is usually with your partner. Look out for changes in your sexual chemistry as well as significant changes in the type and frequency of the sex you have with your partner. Changes in that may indicate that there’s something going on.