A solo entrepreneur's journey is a lonely one — everything is on you, there's nobody to bounce ideas off of, and rough waters demand an incredible personal drive to keep going. That's why finding a business partner for your new venture is generally considered to be a smart move to minimize risks and distribute challenges. Two heads are better than one, right?

Finding a partner, however, is easier said than done.

Where to find someone who has complementary skills, the willingness to undertake the risks and responsibilities of a nascent business, and — perhaps most importantly — the integrity and loyalty necessary for purposeful collaboration? For some, the initial response is to look close to home, to someone you already share a strong bond with and trust deeply, namely, a childhood friend.

That's what I did. I started a business with my friend Rihards, whom I've known since we were in primary school. We sold our first business for six figures, and now we run Supliful, a consumer packaged goods startup. Would I want to do it with anyone else? No. But has it always been smooth sailing? Also no.

From my 15 years of experience running a business with a childhood friend, here are three pros and the biggest con.

Typically, a childhood friend is someone you know intimately, and vice versa. This brings several benefits to a........

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