I could only think of this one both are good(?) delinquents heh it’s shounen ai tho so it’s your choice~
http://www.mangago.zone/read-manga/karasugaoka_don_t_be_shy/
Not exact but I think beelzebub is somewhat like that.
almost every f**king shounen manga has what you are asking. (〜￣△￣)〜
Why did two people downvote? Fuque you.
I've read all your recommendations already but thanks for the effort
I would also like a manga with a delinquent who seems means on the outside but will always stand up for his values and friends. Prefer him to be dumb but good looking. I'd also like if he had a pompadour, but that's not necessary. No yaoi, josei, or shoujo pweez (I'll tolerate shounen ai only if the art is good)