Can you smoke outside on the patio?

No. Smoking is not permitted anywhere near the restaurant. 25 feet to exact. That's MA law for ya

I belive you have to cross the street there to smoke .

Can you recommend a place near Somerville that allows smoking?

Massachusetts prohibits smoking in businesses and restaurants.

I usually go like around the corner from the patio or across the street

Negative. You have to step 25 feet away from the establishment by law. You should just quit smoking anyways 😁