Understanding and application

In الْمَرْءُ مَعَ مَنْ أَحَبَّ, what tense is أَحَبَّ?

Intention, sincere goodwill, and a first nominal sentence (Hadith 1–7)

• past tense: he loved
• present tense: he loves
• imperative: love!
• it is a preposition