A Muslim woman is shy, has lots of Haya. A sister has a diamond which is her honor and dignity. Protect your honor from bad environment and fitnah.
Respected sister, even if a man is engaged with a woman, he is still a non-Mahram until the actual Nikah is made. Meeting alone or going out with this person is not allowed for her. It is required to observe complete Hijab with him until the Nikah is done. Unnecessary talks or chats should also be avoided.
Islam does not encourage pre-marriage love relationships between a male and female who are non-Mahram to each other. There are limits in Islam regarding love relationships before marriage.
You may study the following advice and articles:
Pious Friendship and its effect on Character
Easy Road to Paradise
Why is Hijab necessary?
Cure for Pre-Marriage Love Relationship which does not lead to a Marriage
For additional advice, you may re-submit your detailed question with a valid e-mail.
And Allah knows best.
Ask Alimah Team
Note: The rulings giving herein are based on the religious rulings of the Islamic Law and do not have any implications on the Law of the Country. The rulings given hereunder are specifically based on the question posed and should be read in conjunction with the question. AskAlimah.com site bears no responsibility to any party who may or may not act on this answer. AskAlimah.com site being hereby exempted from loss or damage howsoever caused. This answers may not be used as evidence in any Court of Law without prior written consent of the web site.