(PW) annoy, bother, upset

He has a difficult and annoying personality and always got under my skin.

(dictionary) get under someone's skin

1.      Irritate someone, as in She really knows how to get under my skin with her nagging . This expression no doubt alludes to burrowing or stinging insects that cause itching or similar skin irritations. [Late 1800s]

2.      Obsess someone or affect someone's deep feelings, as in Jean's really gotten under his skin; he misses her terribly . Cole Porter used this sense in his love song, "I've Got You Under My Skin" (1936).

(free)

1. To irritate or stimulate; provoke.

2. To preoccupy someone; become an obsession.

(idionquest) To irritate or annoy someone.

1.      The crowd's taunting finally got under Mike's skin. He missed the field goal.

2.      He really got under my skin when he said this country is not ready for a woman President.

(your)

1. Irritate someone, as in She really knows how to get under my skin with her nagging. This expression no doubt alludes to burrowing or stinging insects that cause itching or similar skin irritations. [Late 1800s]

2. Obsess someone or affect someone's deep feelings, as in Jean's really gotten under his skin; he misses her terribly. Cole Porter used this sense in his love song, “I've Got You Under My Skin” (1936).