I snooped on his phone; he wants to remarry!

 Dear Harold,

I regret ‘snooping’ into my husband’s mobile phone and bumping into a short text message promising to marry a woman he addressed as ‘Honey Pie’. I have been contemplating asking him about the intended marriage but also fear that he may lose his temper and kick me out despite having three children and the investments we have with him. I honestly do not know how to approach the situation but wonder whether a man can marry another wife while in a subsisting marriage.