Alcohol has often been used by individuals to reduce their own fears, cope with their anxiety and deal with their negative emotions leading to temporary state of happiness. It usually reduces inhibitions and sometimes helps express repressed emotions.
Even if people just use alcohol as an excuse to cheat, there are definitely underlying issues and concerns, which easily manifest themselves under the influence of alcohol. Thus, there may not be a direct connection, but there definitely is a psychological connection between drinking and cheating.
To end the relationship
Some people cheat with the secret hope that their partner will find out and split up with them.
Love Honey Australia's dating expert Tracey Cox told the Daily Mail:
If this is you, leave. Don't pretend to yourself or your lover that you're leaving for them, you're not.