<P> Theresa drops off the map again until the end of season three, in which Kirsten spots her with her baby at the airport . She informs Sandy of this turn of events, who tells her not to tell Ryan, as he will no doubt interrupt his college visit at Berkeley . She does tell Ryan, however, who lives up to Sandy's expectations, and returns home . Theresa comes to visit him, and informs him that the baby is in fact not his, but Eddie's . (However, it's strongly suggested that the baby is in fact Ryan's since it is seen with all light features like Ryan; Theresa and Eddie are both Hispanic). The two spark another of their "relationships" for a short time, but Ryan's fight with Kevin Volchok convinces her that Ryan has not yet matured enough for a relationship with her, and fears the influence Ryan might have on her baby . </P> <Table> <Tr> <Th_colspan="2"> (hide) <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> The O.C. </Th> </Tr> <Tr> <Th> Characters </Th> <Td> <Table> <Tr> <Th> Main </Th> <Td> <Ul> <Li> Sandy Cohen </Li> <Li> Kirsten Cohen </Li> <Li> Ryan Atwood </Li> <Li> Marissa Cooper </Li> <Li> Seth Cohen </Li> <Li> Luke Ward </Li> <Li> Jimmy Cooper </Li> <Li> Julie Cooper </Li> <Li> Summer Roberts </Li> <Li> Taylor Townsend </Li> <Li> Kaitlin Cooper </Li> </Ul> </Td> </Tr> <Tr> <Th> Recurring </Th> <Td> <Ul> <Li> Trey Atwood </Li> <Li> Anna Stern </Li> <Li> Theresa Diaz </Li> <Li> Hailey Nichol </Li> <Li> Zach Stevens </Li> <Li> Alex Kelly </Li> <Li> Johnny Harper </Li> <Li> Kevin Volchok </Li> </Ul> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th> Episodes </Th> <Td> <Ul> <Li> Season 1 <Ul> <Li> "Premiere" </Li> </Ul> </Li> <Li> Season 2 </Li> <Li> Season 3 </Li> <Li> Season 4 </Li> </Ul> </Td> </Tr> <Tr> <Th> Related </Th> <Td> <Ul> <Li> Awards and nominations </Li> <Li> Music on The O.C. </Li> <Li> Chrismukkah </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> (hide) <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> The O.C. </Th> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul>

What happened to teresa's baby on the oc