People define cheating in different ways. While some consider a kiss to be cheating, others don't think it's cheating unless there is full sex involved.
Personally, because I am into 100% dedication and commitment in a relationship, I would consider anything from kissing and beyond as cheating. Flirting and suggestive texts or emails are disrespectful and a definite warning sign but as no physical contact has happened, there is a possiblity that I MIGHT (big might *lol*) let it go.
I have devised a poll at the side of the page where you can vote on the things you consider cheating. You can choose more than one option.
I would really love to write an article on this topic so if you could please leave your thoughts in the comments, they may be published at a later date. If you don't want your thoughts published, just leave me a note and I will leave them out. Finally, if you don't mind your thoughts being published but want them written anonymously, drop me an email to firstname.lastname@example.org