Hi @Steven Kleppin - as many previous posters said, you need to always comply with securities laws when dealing with investors. So you are obligation is something I call the "three D's":
1. DISCLOSE - all the material facts. What do your investors need to know to be fully informed.
2. DISCLAIM - any liabilities. What are the risks associated with investing? What rules are you operating under.
3. DETAILS - tell your investors what you are up and what their expectations can be going forward.
Another poster mentioned "substantive pre-existing relationship" - this is true. But what does this mean? There is a lot of misinformation about this phrase and test.
A substantive pre-existing is one where you are "intimately aware of one's financial ability to invest." This is normally done through a investor qualification form. Honestly, if you google search "investor qualification form" you should be able to find one. Provide it to all of your potential investors. It will help you a lot in the event of a problem. Best of luck!