From The Morning News:
Question: If someone tells you that they “love you seriously,” and they want you in their life, is that being a friend, or is it more?—B. West
Answer: Your use of a first initial, as well as the lack of any revealing pronouns in your letter, complicates the matter a bit. If this declaration came from a woman, I think she just wants to be friends. She’s warning you away with a wishy-washy adverb. If it came from a man, it’s possible he’s trying to be sincere but you’ll never know.