Jennette McCurdy & Andre Drummond -- REAL DATE NIGHT ... After Twitter Courtship

The celebrity relationship born on Twitter is still going strong for "iCarly" star Jennette McCurdy and Detroit Pistons star Andre Drummond ... 'cause last night the two went out for a romantic dinner in L.A. and TMZ has the footage.

In case you're unaware, 20-year-old Drummond revealed his longtime crush on 21-year-old McCurdy over the past couple of months during "Woman Crush Wednesdays" on Twitter ... posting several pics of the Nickelodeon star.

Once she got word of his interest, she reached out ... and the two hooked up in real life late last week.

Tuesday night ... it appeared their relationship was still going strong -- the two were spotted holding hands on their way out of Madeo in West Hollywood.

FYI -- Drummond ran the whole date in style ... using a driver to chauffeur the couple to and from the restaurant.

#realpimp.