Alegro is not a spanish word. Perhaps your confused with the spanish word, Alegre , which means happy.
It means (I am) glad to see you
eres alegro
It translates to 'I'm glad you think.' It is in the Spanish language.
'Yo alegro por mi' means 'I am happy for me' in English (Google Translator).
Translation: That's good, it makes me happy.
im glad
If you're a male, you say, "Me alegro que estoy casado." If you're a female, you say, "Me alegro que estoy casada."
Me alegro de que tú eres mi amigo
Me alegro de empezar a trabajar con Usted.
"I'm glad you're feeling better" in Spanish is "Me alegro que te sientes mejor". It is pronounced "May ah-LAY-grow kay tay see-EHN-tace may-HORE". Please see the Related link below for confirmation of the translation.____________________________________________________________"Me alegro" is a subjunctive trigger.You're using the verb "sentirse" which means "to feel"So, it should read"Me alegro que te sientas mejor."or"Me alegro que te estés sintiendo mejor."you could even attach the reflexive pronoun to the end of the gerund and say:"Me alegro que estés sintiéndote mejor."(note the added accent on the 3rd vowel from the end.)
I rejoice/ am delighted that I'm free of you
alegro