I'm not an attorney and the answer requires describing law. Therefore, I have copied something from a legal site: Forgery The crime of forgery generally refers to the making of a fake document, the changing of an existing document, or the making of a signature without authorization. Documents that can be the object of forgery include contracts, identification cards, and legal certificates. Most states require that forgery be done with the intent to commit fraud or theft/larceny. http://criminal.findlaw.com/crimes/a-z/forgery.html Note that it says: ... the making of a signature WITHOUT authorization ... and ... INTENT to commit fraud, theft, larceny. It seems you have your boyfriends permission or authorization and you do not seem to be committing fraud or theft. Again, I'm not an attorney. I'm just providing you with information. You'll have to make your own judgment.

Generally speaking you're OK. There's nothing inherently illegal about signing the name of another if it's with permission and there's no illegal intent being effected (and the specific practice you describe is commonplace in business settings).

It is only legal if the couple are married.

Probably it is okay. As long as there is no deception and you are authorized to do so, it seems like it is okay. I know, for instance, of secretarial staff signing papers on behalf of partners litigating multibillion dollar cases, often because the partner or managing attorney was taking leave in Bermuda or Bar Harbor or whatever. Some real bigwigs don't really even do menial things like picking up a pen, and some are so old they have probably forgotten how to write their own names, so this is actually a fairly common thing even at the highest reaches of law. The 2 key things are that it is clear that the proxy is authorized to sign on the attorney's behalf, and that it is clear on the document that the signature is made on behalf of whoever should have actually been in the office. However, just because this is fairly common does not mean it is ideal. One prominent firm I am familiar with tries on principle not to do proxy signatures, except in cases of true necessity, such as not wanting to interrupt a senior attorney while yachting. I do not know the specifics of your business so don't take anything I say as legal advice. Perhaps you can answer this question yourself: have these executions of contracts ever been challenged?

I think it would be safer to sign your own name, followed by pp his name. (pp is per pro - meaning for and on behalf of).

You should handwrite or type his name and then sign your name. If you sign his name and cannot prove that you did not have the intent to defraud, you could get busted for forgery. This won't happen as long as you are still dating and he will vouch for you, but if you ever break up this could haunt you.