The use of the infinitive (Example)

Question

Hi I am a bit confused. I was reading about adverbs and I saw this sentence

Je t'aimerai pour toujours --> I will love you forever

I though the infinitive Te/t' would only follow sentences with Tu at the start. Is there a rule around since it's about someone else the 'Je' bit at the start isn't the subject?

Is there a topic on this specifically for me to understand?

Thanks,

Max

Accepted Answer

Max, there is no infinitive in the sentence you note.
Je is the subject pronoun, te/t’ is the direct object pronoun (obligatory elision with following verb starting with a vowel), aimerai is the future tense of the (non-reflexive) verb aimer in first person singular and agrees with the subject pronoun. 
An infinitive is an unmodified verb form (unconjugated).
Unfortunately, there is a problem in the program at the moment and I can’t link relevant lessons, but you may want to revise topics guided by the preceding details.

Answer

The "te/t'" following "tu" is for reflexive phrases. These are often things you do to or for yourself, like "Je m'habille" or "tu t'habilles" (you dress yourself) but here you're not saying "you love yourself." When your subject and object pronouns are different, you will see things like this "Je t'aimerai" for example instead of "tu t'aimeras" which would be "you will love yourself."  Like Maarten said, the infinitive is an unconjugated verb (so here it would be "aimer" meaning "TO like/love") Hope that helps as well.