Can a Suitor Lie to the Non-Muslim Family of the Girl He Wants to Marry and Say He is Unmarried
Question

                Last year I came to know of this brother who teaches Islamic classes and also through da'wah work. He seems to be like a religious brother (Hafiz of Qur'an and organizes Islamic activities maasha'Allah), and Allah knows best.

This brother will be getting married this year, and then wants to marry me next year insha'Allah (as I would like to get married after I graduate from unviersity insha'Allah)...so that would make me his second wife.

The issue is - my family is not Muslim (non-practicing Shi'a, atheist, agnostic, etc) - since two male family members have spoken to me about the topic of polygamy already, I suspect that they would ask any suitor if he has other wives.

I asked the person going between me and the brother how he could answer that...because I believe my family would only accept 'no, I don't' as an answer and if he said that, that would be lying.

His response was that it is permissible to lie in this situation to prevent family ties being broken.

I'm really unsure about if this would be a permissible situation for him to lie in? Do you think I should enter into this marriage? I would appreciate your advice.
Praise be to Allah.First: 
If you have a Muslim 
    guardian, he would be the one handling your marriage and the suitor would 
    need to answer him truthfully if he were to ask him about that. The guardian 
    has the right to look into these matters for the benefit of his principal 
    and to enlighten her on matters she may not perceive the outcomes of.
And if you do not have a 
    Muslim guardian from your relatives, your marriage should be handled by the 
    Imam of an Islamic Centre, or someone similar who has a position of respect 
    among the Muslim community and your relatives would have no authority over 
    you. In that case we could say: If the suitor is a pious man and you fear 
    that if he were to inform them of his previous marriage they would refuse 
    him, then he can use what is known as tawriyah, which is basically the use 
    of speech which can be understood in different ways (intending for them to 
    understand other than the reality). For example, he may say: “I did not 
    marry (i.e. a year ago)”. But he should beware of saying: “I am not married” 
    or “I don’t have a wife” as that is considered as an implicit divorce 
    according to some jurists and the divorce would be valid if he had that 
    intention. 
Second: 
You should consider the 
    consequences of your family finding out that he is married and that you both 
    lied to them, and the effects that will have on their opinion of you and of 
    Islam and your husband, the Islamic caller. It may have a negative impact 
    and so we do not advise you to get into such a predicament, the results of 
    which may not be commendable.
We also do not support your 
    waiting a whole year for a man who has not yet married his first wife. 
    Therefore, if a suitable suitor were to propose, you should seriously 
    consider him for the sake of preserving your chastity and protecting 
    yourself, and also for fear that this present suitor may change his mind 
    about marrying you. 
You should also know that 
    the suitable, righteous and religious husband doesn’t necessarily have to be 
    one who delivers lectures and sermons and is active in Islamic centres and 
    mosques. Rather, he should be religious himself, venerating his religion and 
    keen to worship his Lord. 
Increase your supplications 
    to Allah for ease, success and satisfaction. 
And Allah knows best.