Erotic stories can lead to better sexual arousal. I have come across many couples reading a passage aloud as one of the variations in foreplay and they reported that it had a wonderful effect!

Fantasizing about other partners during coitus is Common

Indulgence in fantasies about one’s ideal lovers, ideal love situations etc. during coitus is common. Individuals indulging in this practice claim that it increases sexual arousal. Sexual fantasies are not usually harmful. They are nothing to be afraid of or ashamed of. In fact, they enhance sexual arousal making sex life more pleasurable and are often used in therapy. Only if there is an associated guilt, it will create situational anxiety affecting one’s response and performance.