Olivia Culpo and Christian McCaffrey have considered “getting engaged”. The 29-year-old model has been dating the soccer star for just over two years now, and the pair’s romance is going from strength to strength, with a source claiming they have discussed taking their relationship to the “next level”. They told ‘Entertainment Tonight’: “Olivia and Christian are serious and very in love. “They have been thinking about taking their relationship to the next level and have talked about getting engaged. “Christian is really close with Olivia’s family and her sisters love him.” Olivia previously sa…