 Tessa is MacLeod 's mortal companion and bears the consequences of his immortality . These include her aging while he does not , the impossibility of having children together and the dangers of MacLeod 's involvement in the Game , an ongoing battle in which all Immortals must behead each other until a single victor remains . Fully aware of this situation , Tessa stays with MacLeod , demonstrating her courage , understanding , generosity and compassion . 
 Tessa <a href='drop_aux' title='1'><mark>is</mark></a>MacLeod <a href='null_genetive' title='2'><mark>'s</mark></a>mortal companion and <a href='uninflect' title='3'><mark>bears</mark></a> the consequences of his immortality . These include her aging while he <a href='uninflect' title='4'><mark>does</mark></a> not , <a href='None' title='5'><mark>the</mark></a><a href='negative_concord' title='6'><mark>impossibility</mark></a> of having children together and the dangers of MacLeod <a href='null_genetive' title='7'><mark>'s</mark></a>involvement in the Game , an ongoing battle in which all Immortals must behead each other until a single victor <a href='uninflect' title='8'><mark>remains</mark></a> . Fully aware of this situation , Tessa <a href='uninflect' title='9'><mark>stays</mark></a> with MacLeod , demonstrating her courage , understanding , generosity and compassion . 
Tessa MacLeod  mortal companion and bear the consequences of his immortality . dem include her aging while he do not , no impossibility of having children together and the dangers of MacLeod  involvement in the Game , an ongoing battle in which all Immortals must behead each other till a single victor remain . Fully aware of dis shii , Tessa stay witt MacLeod , demonstrating her courage , understanding , generosity and compassion .